I recall her mentioning something to Karev too which made me think it was a mutual abuse thing. Or dodging a question. It wasn't just his statement alone but his combined with her stuff but I don't remember what it was exactly. I would really like to see a show tackle how complex an abusive relationship can be instead of just making the men all wife beaters. Even after living in an abusive relationship I know in the real world they're much more complex in many (not necessarily all) cases.