DP and I were talking about my DM and how's she's completely alone and what can be done about it. There used to be a visa that would let her stay here with us until the day she passed but now they've become extremely hard to get (between 100 and 50 get approved each year). So the only options are to either move with her (all as a family) or for her to become an overstayer. He's adamant were likely to get a fine and even go to jail as we're "facilitating" her stay. I know that's the case for employers and landlords but we wouldn't be either of them. (BTW we're likely to move as that's always been the plan but it was interesting to discuss).