Mmm, You have a chance to talk to her if you want to and to give a heads up on it.

She blocked my other alts but forgot to block my main

(Don't know what you want to be honest, Just giving some if you want to talk to em again)

Oh. But do you desire to talk to her again if I may ask?

Also about that, Have you brought up how you were the same as her and have you given evidences to do ?, This is an overhill, Sorry.

You may try to create an alternative account to try and converse with her more if you'd like to or desire, But viewing points what she likes about you and how she reacted to your messages.

She's my ex gf but she wanted to be my friend instead of bf (she asked that since long time ago)

She really blocked me in TikTok for a reason tho (her mother won't let her talk to me cuz her mom thought I'm older than her, and me and her literally same age)