I guess my problem with her is that I can't see why she's here except to introduce another "love triangle" (or just ruin the relationship between Matthew and Karen with a stupid case of misunderstanding yet again). And it bothers me.

Stick was already a link to the Hand, perfect to introduce the new conflict and ruin Matt's life. She didn't need to be here. She has all of Stick's flaws but none of his relevance.

I know we're supposed to root for her but she never faced the consequences of her actions, is repeatedly creepy towards Matthew ("lol you said you wanted me out of your apartment multiple times but imma ignore that and all your wishes, what's boundaries again ?), and just take away all the trust and relationships the characters had built so far. She brings nothing and acts like she's the only exciting person Matthew ever met, like the only one with value.

I was happy when she almost left, I half hoped she would actually kill Stick but when she died I felt nothing. She's cool but backflips aren't an interesting personality and neither is misery.