6. She’s Always “Working”
A very easy way for her to cover up the “busy” excuse is to blame it on work. This passes the smell test, but you’ve gotta probe a little more carefully into it.
If she’s working so much, what’s the incentive? Did she get promoted? Is she covering for a sick or vacationing co-worker? Has there been layoffs that the staff has been cut short? Why does she need to work all these OT hours?
If she can’t give clear answers to the above, then you should be very worried. If she tries to give short answers, probe even more, she may be keeping the details short to avoid getting caught up in a lie. And if she starts reacting negatively to all the questions, at this point it should start to remove all doubt that somethings definitely up.