This gal is being provocative. She apparently feels safe saying and doing these things. It may be because you are happily married or that you are much older. Who knows?
You can either be intimidated - or you can stop it by not giving her any reaction at all.
Then she will move on to someone else that she can safely tease.
(I agree that she may be reacting because of her recent breakup)
Yeah that may be it. I don't consider it flirtatious but rest assured I know where the line is drawn. I'm just looking for answers.
I'm just looking for answers.
Sounds like you're looking for justification, you already know the answer.