Well, I guess the only way to find out is ask her if she's into yaoi. Or if you're afraid of asking, catches her attention subtly by setting a BL pic as ur phone wallpaper or pc wallpaper. U could show her cute pictures of celebrities you ship and say things like 'they're cute together don't you think' and just laugh. It helps lessen the 'disgust' if those celebrities are kpop artist because ppl usually stereotype them kpop boys as gay for each other.
Those stuff works on my clostes friends and I found out one of them ship boys and I turn a few more into a fujoshi because of that tactics.
This might be a bit more extreme, but maybe setting up a camera and "accidentally" leaving a yaoi manga open on your laptop or something? Or even start reading a yaoi manga with her in the room (or reading with you) and if she freaks out you could just say that you didn't realize it was yaoi. My first yaoi manga was completely accidental as I was reading Crimson Spell (in the living room and on the TV) and I didn't realize it was yaoi until I clicked the next page and got a full frontal view of the goods in action. I was shocked and closed it really fast, but I went back to it later (on the computer downstairs) and continued because it seemed really good. Thus I became a fujoshi.
If all else fails then just recommend her a shounen ai manga to test the waters(I recommend Silver Diamond or Koori Mamono no Monogatari by the same author).
1 of my friend kinda acted like that. But i kept my mouth SHUT!! Cause there's no way in hell i am coming out to someone as a fujoshi unless i 100% trust that person(which are very few in this world). Later when we became close friends i came to understand that she is not into that. May be if she came across a good bl with really hot guys she might turn into a fujoshi but usually she's busy reading her shounen(she's a huge shounen freak!). So i let her be & carry on with my "don't know what BL is" act.
So what you can you do about your friend?
1. You can wait for more time & get to know her better, like i did with my friend.
2. You can suggest a really soft yaoi to her. Best 1 would be something by CLAMP. Their works are HIGHLY suggestive of boys love but they never tag it as shoune ai. You can either recommend her "Wish" or "Legal drug". And see her reaction to it.
3. Just ask her directly whenever she brings these type of "hints" you are mentioning. like - "Hey, 1 of my friend also go to that site or into this. She's a huge fujoshi. so are you into this too?". Make it sound as light as possible. May be then it'll be easier for her to talk.
your friend doesnt like it or hate it,she is in between.I can say, firstly she curious with Yaoi and read it, then having her pride to not saying that bcs she disagree with a genre like yaoi (malexmale, homosexual stuff) or she just embarassed bcs it's too vulgar for her. and one more thing you cant slap someone on the face bcs they say homosexual not a good thing. Everyone has their own opinion abt this society and knowing which right and wrong ones. I'm not a homosexual supporter, but I respect someone's choice of living, as long as they didnt harm others..
I have this...female friend and I'm dying trying to figure out if she likes yaoi or not. I never suspect her you know but she just give me these hints that drives me insane.
1st hint: She once told me, "hey, dont go to this one website okay just dont," and I told her if she doesn't want me to go on it she shouldn't have told me in the first place because hell ofc im gonna go on it just because she said not to, and she knows it. Then I asked wat was the website and she told me, as u have guessed, www.mangago.zone, i find it highly, highly suspicious for her to come across such a site if she had mangahere, mangareader or all those other stuff to read shoujo on. How often does mangago shows up as the first choice to read skipbeat?!?! Right maybe the girl was just checking all the manga reading websites there is. This clue wasn't much of a trigger for me either.
2nd hint: She asked me if I knew how boy and boy have sex. (ofc I fcking know, I'm a hardcore yaoi fan since the day-) anyways since I dont want her to suspect anything I said " ofc not, I dont even know how boy x girl fck." And she was like thru the a$$hole. I also find it weird how we were talking about baking a cake for our project and it turns out to be a lesson about how guys and guys does it together. NORMALLY, you'd tell a person how a girl and guy does it before u tell them how a guy and a guy does it right(?) theres a 0% chance that she thinks I already knows how hetero sex works therefore decides to tell me how boyxboy sex work cuz I state to her clearly that I do not knows how sex work at all and never wants to find out(a lie ofc) this random piece of info she threw at me THREW me off. I'm 20% suspicious of her.
3rd hint: One day, out no where, she said to never, NEVER, search up Levi and Eren name together. And we all know when someone said never to do something, you do it, well I do it. I asked her why, though I already knew why. She whispered, WHISPERED(<---suspicious!!) and said cuz it'll show arts and display and pictures of shipment between eren and Levi. I'm known to be a lazy ass motherfreaker but not lazy enuf to search up both characters at the same time unless u know...cough...stuff..but I guess it can happen. She can happen to just wanna see a cool scene where they fight together or something. I didnt think much about it...but the fact that she told me about it raise my suspicion by at least 5%. And then the next thing came out of her mouth threw my whole scale and percentage calculations into a pit. It was Levi and eren ship name. Hell even I, this boyxboy love lover, dont know their damn ship name, what was it, Lev something? For a person that said she dislike yaoi, would they go as far as to go and look up Levi and eren ship name?
She often mention she doesn't like yaoi and stuff, but just because she mentions it so much it gets me thinking that this girl just dont want ppl to think she likes yaoi that's why she refuses it so much. Well its having an opposite effect on me. Or maybe she's hinting me?!?!? When I was at her house, she told me her friend likes...those stuff, once again whispered "yaoi". I'm a one man team so I dont have much resources to base on, but do u normally say ur friend likes yaoi when u introduces them? I cant come to conclusion because I dont have enuf solid evidence on determining her likes on yaoi. Does any of ur friends act this way and then u eventually found out that they like yaoi? Are these hints or does seriously dislike yaoi?!?! If she dislike it why mention it so much?!?! I know that if I ask her, she'll said "oh hell nooo" and that'll put me under HER suspicion, she'll be watching me like a hawk hunting for that one fat fish! And if I told her, it'll put us in a very awkward stage, cuz if she asked what I was doing, and I answered reading manga, it'll prob disturb her to know that I'm reading all that smutness, uncensored stuff, its like having ur parents found out u reading stuff with guy's things all out and naked and on a bed or kitchen counter or couch ect. Yaoi is not a bad thing, in fact if a person said yaoi is disgusting cuz its male x male(I'll understand if ur talking about the smut, no smut is alright for the babies eyes), I'll bitch slap them in the face and sent them to the hospital then make sure they will be admit to an insane asylum next. Dont u dare do homosexual discrimination around me or I'll slice ur face, and feet and hands and HAIR. But hey, if someone have a better understanding of human's psychological thinking, enlighten me, I'm tired of playing this chase and guess game with her. I cant just assume with my instincts because this is a first for me. No experience whatsoever. Suggestions anyone? :)