I guarantee that Bitsy is trying to get a rise out of Rosie and make her start up some media war with the Bits to take the shine (and bitter sting I am sure) out of the fact they are bringing Rosie back to the View.
If Rosie does come back, I would start watching again for that reason alone,
can't imagine why she would want to come back after the fiasco, but stranger things have happened, espcially on this show.