my stalker resurfaces and threatens me often

backstory: years ago i was 17 years old and she was 13. she was friends with my girlfriend’s little sister. somehow she found my meme account on instagram and dm’d me, she thought it was really cool how i had so many followers. i honestly didn’t think much of it but now i realize she idolized me for being “famous”. when she’d say that, i thought she was joking because who cares that my meme account has 18k? anyways, we dm’d sometimes and hung out in groups and even though she was much younger than me, i thought she was pretty cool. we were just friends and everything was 100% platonic. at least i thought so anyway 😐 she was secretly in love with me. when her parents found out she was in love with me, they made her block me because of the age difference. i was confused at the time because nothing inappropriate ever happened, but wtv. i moved on. but she must have told her parents i also loved her like that because her parents and therapist think i groomed her, etc. she’s convinced everyone of this narrative and i do believe she believes it herself. it’s honestly pretty insane since nothing romantic/sexual ever happened. i now know that i should’ve never been friends with a 13 year old, but im someone who goes with the flow and when she texted me, id reply. big mistake 🤦

from time to time she will find my accounts and make threats on me. once she said she had talked to the police about things and i was pretty scared but nothing ever happened. honestly im not sure if she actually did that or just wanted to scare me…but also i don’t believe she has any “evidence” of anything they would care about…? but it’s still scary. she says she will find me and hurt me. she’s never been to my house before, but i was never careful and i wonder if she does know my address. she certainly knows what college i go to and what classes i take, because i posted my classes on my tiktok page, which she recently found and commented on. i don’t publicly say my school name, but i don’t think it would be hard to find since i have so many videos taken at the school. i keep blocking her accounts, and when i say “block any other accounts they may create”, she is somehow still able to find me on other accounts. she knows my username and i guess i could change it :/ honestly it’s the same as my reddit username, so she might see this. it has been so many years and i want to be done with this and never hear from her again. im at a loss for what to do.