Mil lives alone but has lots of friends and a good social life.
Issue is she constantly demands DHs attention asking for constant jobs to be done etc. He works a lot of hours so we don't get stuff in our own house yet he's always around there doing her diy etc.
Millicent whilst OP gives one example, she does stress that her MIL is constantly demanding OP's DH's attention. Not to mention she deliberately got OP out of the way so that she could manipulate OP's DH into doing what she demands. The OP would obviously not have a problem if this was a one off!
OP, hopefully this snippet/ passage from the chapter on Engulfers is helpful the following quote is taken from chapter 3 of Toxic In-Laws .p41, 42)
'Engulfers ...... want to be with you, and they invest you with the unique ability to make their lives better. But these are the in-laws who measure your love in terms of time spent with them and more is never enough. In their eyes your need for privacy, or just for time apart, are subordinate to their claim on your life.....warm terms come cloaked in a very particular set of definitions and behaviours:
"Connectedness" means " You are not a separate person and you come when I call"
"Love" means "You're my whole life and it's up to you to make me happy"
"Family" means "Loyalty and first priority to your family of origin and not the one you chose to make."
And "tradition" is "the unchanging law: we do what we've always done, no matter how your life has evolved"
Susan goes on to say on page 52
'Engulfers gain a lot of their power from knowing that their adult child has an overdeveloped sense of guilt and responsibility for their happiness. X certainly did. But in his need to keep his parents happy, X was willing to sacrifice the well-being of someone else-- his wife'
I would love to quote more, but the book really needs to be read in its entirety. I know that so many behaviours suddenly made sense when I read Toxic In-Laws. I had initially read to understand my in-laws better, however, ended up recognising engulfing behaviours in my own DM. DH and I went through the book together and have followed the advice successfully for my DP.