what should i do?

so i have a project to do for my apush class and i’m grouped with my toxic ex best friend. when we got into groups the only chair left was next to her so i sat there and she turned it away from me, not including me into the group. she then went and made a document with shared notes on how we are going to present, who goes when and what to say. she didn’t add me to the doc. idk what to do anymore, she literally acts as tho i don’t exist. please help.

some back round info of what happened last year (not necessary to read to help out in this just for a better understanding):

i told her who my crush was. she said “no offense... but you have no shot whatsoever, he only likes pretty skinny and smart girls” and i was like yea i know but i can still dream.

she also told me things my friends were saying about me (they never actually said these things she just told me they did) so i would cut them off but i didn’t. so she decided to tell them things i was saying about them even tho i didn’t say them, they cut me off and she left me alone with no friends for 3 months

then she became my friend again and did some other shit but that’s beside the point. i called her out for recording someone coming pit of the closet to her over ft cuz she was keeping it for black mail and never spoke to me again.

anywho i’ve been fine this year but now i’m having flashbacks from last year which are giving me panic attacks and i’m crying which is fun. please help me!!