I'm gonna have to agree with the way this thread is going. Maybe if she actually loses friends over this shit, she'll start to question her own bad judgment.
I say tell her you'll be happy to provide a shoulder to cry on and a couple of "I told you so"s when she's over her little rebound mistake.
The big rebound disaster is classic, she's not doing anything weird, here, but there's no reason why you should have to watch.
