Five years ago we moved to be near the in law family. What a mistake that turned out to be.
All but MIL moved away.
I would love to move back home nearer to my own family, my DPs are getting older now and have health problems and it'd be better all round as my family is very close knit and it means my DC will be able to see and play with their cousins etc. My DGP are getting on in age, and both have fought cancer this year and don't have many years left so that's another factor to why I'd like to move nearer and spend more time with my family. It's also in the city, so better opportunities for DC and myself and DH for work etc.
The problem is MIL. She keeps commenting she'd be lonely if she moved even if she moved to the next village from us. She knows I want to move back to my hometown.
I suffer with bad depression and anxiety and I haven't made any friends where I currently live and it's just shit having MIL for company. (She's nice enough but we we have very different interests). DH doesn't want to leave her on her own, she has health problems herself and the rest of the in laws live in our hometown too but she won't move back.
I feel emotionally black mailed a bit. I know my own poor mum is lonely when we lived in the same city I used to do loads with her and we get on really well. 
I do feel angry with the in laws as this is their mum and they're really not making the effort with her and they all expect me to give up my life and hopes to keep her company. It's getting to the point where I can't even be bothered to talk to them as I feel so angry and let down.
Any advice please?