I think I'm falling in love w my bsf, does she feel the same and what should I do

Hello everyone, first time posting here. I (14F) am a gr 8 student in a school in Canada, my best friend (14F) is in a different school. I want to start this off by saying I consider myself straight, but she has been more than just a friend to me and I think she might be changing my sexuality. I have a very strict Chinese mom so I don’t really want to consider that aspect of myself though I do support LGBTQ+ a lot.

For some context: we met on the bus in grade 6 (2 years ago) as I was a new student from China at the time (I went to an international school), and we hit if off on that very crowded bus and became bsfs ever since. I left that original school after one year and came to the current one as it was better, we promised to stay in touch and did for the first half of gr7, after that I have been left on opened repeatedly and we have since stopped talking. However, when i text her, she leaves me on read, but when I send her long voice messages I do get replies. We’ve also seen each other a total of 2 times after I left, one in may last year for my schools friday night lights, and one this year in january when she came to interview at my school (she’s waitlisted). I’m also going to see her one last time this May before I go to america for high school (i’m boarding). Ever since I left gr6, she has been in my mind more than just a friend, though I really don’t want to explore that part of me. I am also very sure she does not feel the same other than she’s been distant (I’m js delulu, but I really hope she feels the same way). I haven’t liked a guy in like 2 years, I had a bf in gr6 which is stupid but she kinda got us together. I also often picture us kissing, but I know thats probably not possible and she js broke up w her bf like a month ago. And when i see her in very early May, theres going to be a mutual “friend” there who I hate. Please give me advice on how to do this and I know that yall prob cant tell if she likes me or not but this is just all over my mind now. Also, if any of you have suggestions for what to do in may that would be great. Any advice would be gladly appreciated, thank you!