This story stinks like a rotting fish. In no way, shape or form did she not discuss pay. She's lying and it'll definitely bite her in the a$$.

This is going to blow up and might have legal ramifications beyond returning the excess pay.

There's zero way for her employer to claw this back. If some loser in HR says she needs to pay it back, all she needs to do is say "Nope."

I had am employer tell me to repay moving costs many years ago when I left after then moved me, but they had no basis to make that demand.