[Thankfully(?) for him, she takes it as completely innocent because she doesn't realize that there's an innuendo behind such words. She just gropes his upper arm again because seriously, you don't get these kinds of muscles without building them up.]

I wouldn't go that far, but if you can fight, I need people I can spar with. I'd hate to get rusty with my skills because there's no one to spar with.

[And she takes a lot of confidence with how strong and skilled she is. Then again, she always enjoys backing up her words, too.]