Hmmm, I wonder if Charlie may have started it in another room and she came to tell you about it and then she took off after him to let him know she'd had enough? In any case, it sure sounds like a good sign that her energy level is up and that she might be feeling better.
If there is another spat, I would consider keeping them in different rooms when you are not there as she sure doesn't need anything else on her plate to deal with such as wounds from fighting. And then they could 'be with each other' when you're around? But who knows, maybe it was a one time thing.
Glad to hear that she is so full of beans!