Although you might be sympathetic to the problem that this employee has encountered, this does not mean that either one of you should ignore the rules that are in place at the workplace. The fact remains that, according to the rules of the department, the employee cannot have a secondary employment with a competitor. The doctor would be considered a competitor. Therefore, the best thing to do would be to show understanding towards the employee, but to remind her of the policy and of the fact that this was mentioned during the interview.