Is OTHER wrong in the post ? POST : This is gonna be a long one, so bare with me.

Two years ago I became best friends with this girl called T. About a year ago, she gave me this thimble her dead grandmother had given her. About half a year ago, I realized that my friendship with T was very toxic, So I wrote her a letter explaining everything, and telling her I didn't want to be her friend anymore.

A few days ago, she asked me to give her back the thimble, because it was from her grandmother. I said yes, but that weekend I forgot, so when she texted me on Saturday and seemed worried, I lied and told her I had it in my bag, because I really thought I knew where it was and didn't want her to worry. Except that a few months before that, my brother decided he wanted my desk, and my mom told him he could come get it, despite me telling him not to and that he could get it another day, because it was full of my stuff, and my room was a mess. He came to get it anyway, I had a panic attack and hid until he left. While I was up there, he had dumped everything from my desk onto my floor.

So on Monday, I came clean to T, explained that I lied and had lost the thimble, and I apologized. That night I looked again, i even moved my bed to look under it, but I couldn't find it. Today, my friend F texts me and this happens.

F: Hey I'm at T's place and she's talking about her thimble again

Me: Idk what she wants me to do, she gave it to me a month ago, I had it up until a few months ago, my brother dumped my desk out onto my floor, and I've been looking for several days

F: have you checked everywhere you could?

Me: Yeah, I moved my fuckin bed to look for it.

F:Well, T wanted me to tell you that if you can't find it you'll have to pay for it apparently

Me:I'm not paying for something she gave me as a gift

F: Idk what to tell you man, you know that thimble was from her great grandmother who died

Me: I know that, and I'm sorry, but she made the decision to give that to somebody. And it's not like I just tossed it somewhere, it was in my desk for almost a year

Me: Tell her I'm sorry, but I'm not paying for a gift I was given a year ago

F: she wants to hear it in person

I thought that was the end of it, until F sent me a text version of the letter I gave T last year. I said that was a bit petty but ok, and that if he doesn't want to be my friend he should tell me in his own words. He said he thinks I'm a liar, I asked how I'm a liar and he brought up the thimble thing. I said yes that was a was a shitty thing to do, but one instance doesn't make me a liar. He said there's more but he forgot, I said if he thinks of anything tell me, because I'm not a liar. He said that along with the lying thing, when he broke up with his ex, T was able to give him advice and make him feel better while I just sort of listened. I said that I'm sorry, I tried my best, but I'm not very good with emotions. He said it didn't seem like I tried.

AITA? F was basically my only friend, I'm kinda freaking out.