Well that would be nice if it could happen sooner rather than later because currently I don't have anything to reply to that.

Seriously, is Beorn honestly, in his bear state where all he wants to do is chase and kill things, going to stop chasing an entire group of screaming running dwarves (and Bane, Bilbo and Gandalf), to stop and fight Serena because she told him to? No, probably not...