First and foremost, it's really hard to come out to parents or adults who are "close-minded" in other words; they're stuck in their own beliefs and unable to accept new ideas especially if it contradicts their religion or belief. I have a relative who also says the same things as your mother and has teases gays. It's really hard to come out to so......
I've got 3 full lists of well rated mostly BL, it's also got a bunch of webtoons near the end of the third list if you wanna check them out, but some webtoons that haven't shown up on Hot too much but are really good are When the Star Sleeps and Hello I'm Your Stalker (Second one is biased, it's definitely slow burn and more than a little confusing......
How to come out