Over the events that happened id like some advice
It really wasn't her fault
If what I was told was the truth
So should I be there for her and forgive her?
Or
Should I just have nothing to do with her?

If you are angry at her over something that was not true, yes you should forgive her, but it's hard to say given the information you've given.

Believe none of what you hear and half of what you see my friend.

All of the info is in my last question.

Then why didn't you put this with your last question. Instead of asking in another thread.
This is the thread https://www.askmehelpdesk.com/teens/friend-got-drunk-had-sex-670715.html#post3157280