Is it worth it?

Yea its best if bạn end the friendship with her. If she was really a friend, she would actually be there for bạn and stuff. its not great to Những người bạn with a back stabber

If she never acts like a friend to you, then it's probably a sign that she's gone off, and is making new friends, so maybe bạn should do the same. I don't know what it's like for you, but i had a similar situation. I had a friend who ignored me the whole time, and i found out that she'd joined up with this new group, and had been laughing behind my back the whole time. All i had to do was chat to some of my other Những người bạn to see that the way she'd been treating me didn't even compare. This might not be your case, but maybe if bạn make new Những người bạn then she'll realize that she can't take bạn for granted, and then maybe you'll be able to keep her as a friend, but you'll have new Những người bạn too!

maybe bạn should just find thêm friends, bạn dont have to dwell on the one

yes because it is better then knowing that your friend ignores bạn find thêm friends

Try to talk to her... maybe she doesn't think about what she does? And anyway bạn can make new Những người bạn ;) so perhaps bạn two should take a "break" and hang out with others?

yes if i was bạn i would find other Những người bạn obvisly she dosent care aboutr bạn so dont waste your time with her lifes to short for haters

Maybe she´s with problems at home?