It is hard when it is your own child getting a divorce. This is a hard decision and nobody can make it but you. If you do not feel comfortable with them living there, then you should be honest. Your health is your top priority. If your stress will be increased and your health will go down, then I would say to talk to Tiffany and explain to her how you feel. I wish I could be more help, but I don't know what else to say. As a mother, I am sure you want to help, but as a woman with health isssues, you want to stay clear. I wish you the best of luck in your decision, I as sure it will be the right one.