I am not seeing the problem either.
You had to close and you said you would reimburse 2 days and so now she is collecting those 2 days back.
She isn't doing anything wrong if I am understanding the situation.

are you upset because she didn't deduct it in May and you figured she was going to let you keep the 2 days and you are now disappointed to find out that she wants the $70 reimbursed after all?