DM has a controlling, smothering way with me & over the past few years I’ve been learning to tentatively set out boundaries. So examples are letting herself in to my house when I’m not there & rearranging my things, opening & reading medical letters, reading emails, referring to my children as hers & not mine & my husbands, things like that. Lockdown has meant I’ve been free of interference but now a single household can join another, I’m finding she’s back over & dominating again. If I put down boundaries, however carefully I do it, she retreats, sulks but eventually comes back round only to push at the boundaries again. This time, because of the pressures lockdown has put on all of us, my emotionally capacity for dealing with her behaviour is 0. However, as always when I set down boundaries I feel huge guilt as she has been hugely lonely in lockdown & her life is still very much on hold, apart from now seeing us. I don’t want to come between her & my children as they clearly adore her, but I cringe watching them interact sometimes as I now recognise that controlling behaviour. However, I’m now also hyper-sensitive about it & probably not letting her get away with anything. I don’t know what to do, if I ask her to stop coming round uninvited then I’ll feel terrible as she’s lonely & this is a very hard time for everyone, but I also know I’ll suffer emotionally if I have to tolerate her behaviour as it was before. What do I do?