And she did crash into the hay bales hand at her face, he hadn't done her any lasting damage which again made her suspect he couldn't.
The plagues... Yes she supposed they were her doing, but what could she do about that? Turn herself in to die, no. Ruby was above all else a surrvivor and she wasn't about to saccrifice herself unless there was a damn good reason. Like Castiel or Sam. Selfishly she didn't entirely care about the rest of humanity, not really, and she could protect those she cared about.
"The Winchesters will be safe" she retorted defiantly "And Dean will never actually kill Sam", not that he could she thought in spite of herself, "he'll never have a need to, because you might think I want him darkside, I don't, I never have so why don't you go be a sanctimonious ass at someone else for a while."