It seems that the main reason that she wants to go is because she knew I wanted her to stay.
So, you have told her you can't stop her (not trying to control), and she knows where you are coming from. Step back, and act consistent with this message.
Coach's question is a great one (as always). What is she afraid of?
Also, her telling you she thinks you are controlling her or trying to is itself a form of control she is asserting/trying to over you.
