I would have your mother-in-law inquire if ANYONE on the payroll has had surgery for any reason and had to miss a week of work. If so, and they weren't fired. If she is over 50; might have a major legal issue then. I'm not a lawyer; but I have stayed in Holiday Inns in the past. Either way, she needs to start looking for another place to work and I would explain to the parents why she is leaving. I'm sure the parents responses will put pressure on everyone involved.