Okay lang yan mamsh. Maybe your mom is just shocked. Let things cool for now. I've been there. But they still hadn't found out I'm into bl. They just caught me watching porn and I was grounded for 2 weeks (▰˘◡˘▰) that was a hilarious experience i tell you. She'll forget that too one day like my parents did.
If you are under 16, your mom is totally on point to reign you in a bit though it sounds like she is biased on gay relationships. You could be reading sci/fantasy but that isn't 'normal' either. It's kinda the point of the genre. Later on you can state your case for ex. what you like to read is part of your individuality not your mom's, she should respect that also there are women studies and japanese studies on yaoi and omegaverse...so yeah this could be used as research for college. Go to google scholar and search women studies and omegaverse
My mom found out that I'm into BL and stuff and she want me to stop.I feel so devastated.She told me it's not normal.Can you guys give me a hug?(⌒▽⌒)