The context of the following conversation is Ash gave you a good idea but Jan stole the idea as quick as they could.:
Jan says So I stole Ash's idea and presented it at the department meeting yesterday..
The friend responds Why would you do a thing like that? That's terrible!.
Jan responds To get back at her for doing the same thing to me last year. I would have been promoted if not for her..
The friend responds You don't know that. And now you're no better than her..
Jan responds I guess that's true. Now I feel bad..
The friend responds You need to apologize to Ash and then tell your boss what happened. They're going to find out anyways..