Ouch!
Like Dennis says, I think many parents don't know what to think or do or say, and of course they love you and want the best for you, and obviously being trans is going to have negative consequences out there in the real world (like we don't know that!!) and they want to try top protect us from getting hurt.
I had a long convo with my mom last night and even though I've told her I'm on T, and told her a month ago about my top surgery, she was like, wait, I thought you weren't going to do all that? You were going to think about it?? Regarding top surgery, she's been kind of horrified. When I just said to think about it as a boob job, many women get breast augmentation, and nobody blinks. Why should reducing them be so horrible?? What's the difference, really? I think she kind of got it.
Hang in there, Deniz. Hopefully she'll come around with time.
Jay