She was bored and sexually frustrated and let something vile slip out. I dont think she was trying to DO anything. It was a crappy thing to say and she obviously didn't feel good about it.
Or, she's just an awful abusive b*tch who was trying to inflict pain...
These are complex issues, not fun to be on either end.
And, no, I never said that to H, but I sure felt it at times and it was hellish...