Thankfully Kelly ain't one to mess with. I think she would beat / shoot / drag / something the **** out of him if he tried something. Poor Kesha though. I wish she was strong enough to send him to hell at the first seconds he tried it.
Kelly was not Luke's protege. She collaborated with him because of Clive. Aside from musical differences, Luke and Kelly were fine. You also have to remember Luke wasn't as big as he is now when Kelly first met him. He was much more humble then.
I swore I read it somewhere during the AIEW era or sometime before that.
For sure, I know she said something along those lines. Dr. Luke always had that douche vibes to me.
I wish she was strong enough to send him to hell at the first seconds he tried it. 
And I don't know why