MooseMom - I'm not on dialysis yet either and I plan on doing in-center if and when I have to. I am, however, a step-mother (however, they're all over 18 years of age now). But when they did used to come over every other weekend and such there were times when I wanted or needed to leave the house for a few hours. My husband always acted like leaving the house or even hanging out in my bedroom whenever they were around was going to affect their lives forever! I just never understood that. I personally think the girls enjoyed their private and personal time with their father without me around - not that they don't love me or me love them. So maybe that could be planned as "special time with Dad". They could watch a guy movie together or something. Good Luck. I think you should explain your situation (when it happens) to your step-son and I'll bet you he'll understand (or not care). You know teenagers!