What about Cathrine? She hasn't been physicaly hurt yet, though she has been beat up emotionaly.
Actually, she has been physically hurt. I can't remember what season it was, but her and Warrick were working this crime scene and it was supposed to be clear. Warrick was outside I think. Cath went inside and suddenly this guy attacked her and she yelled "suspect on location". She did get some scratches/cuts or something from that attack. And there is also the thing in Built To Kill where she was drugged and woke up naked, believing that she might have been raped (of course she hadn't been). She's not been in as serious of situations as Sara, Greg and Nick, but she has been hurt physically before. And there was also that time (again can't remember the name of the ep) though this isn't case related, where she was out at that bar and that guy was coming on to her and she walked to her car with him and she tried to leave and he was holding onto the door. She jerked it away from him and ended up with a cut on her face.
But, you're right that she's been beat up emotionally. She's been hurt emotionally just as much as the others have been hurt physically.