Sorry to be so long in answering. I think the answer to both questions is probably yes.
"the image of Kerry and McKInney on the dais together is a great photo op, no?..he'll have to be asked if he repudiates her....and her comments"
If she gets the nomination (likely) the photo op is almost certain to happen. I don't expect the question to be asked before the debates. I hope it is asked then, but for the Atlanta "token appearance" I look for a free ride for both of them.