Same building. Converted flats. Shes in her 70’s and cant go very far. So, Ive been persuaded to get Sky Q it comes with a booster for the Wifi and that can also be plugged into any tv in the flat and just feeds off my wifi. I dont need it. She has a dongle which costs a fortune. If we are in the same building and share the hall etc. We rarely shut our doors. Would it be really bad to set up the wifi booster in her flat?