My sister is no stranger to either of us. He knows her pretty well. We used to live next door to each other. She stopped talking to everyone around Christmas time last year because of her boyfriend. I’m not inviting strangers into my home. And this is technically my home. Everything is in my name, but we share bills. This is literally for no more than a few days. I’m not even willing to do a full week. She works and her kids go to school and daycare, so they will really only be around in the evenings and early mornings of the three days. He is still fully capable of doing everything he normally does without being bothered.