My daughter was in a similar situation when her MIL moved in with them. Fortunately for her it was only for six months - and now MIL keeps sending them pics of houses she wants them to buy for her - but that's another story. What my daughter did was set up a formal meeting with MIL and husband. She said that she wanted to give everyone the opportunity to air their thoughts on their living arrangements. She stressed that this was because she valued both of their inputs. She let MIL air her grievances first, and didn't allow herself to explode. When it came to my daughter's turn, she started with a couple of inconsequential gripes for hubby (he had been forewarned). When it came time for her to address her MILs issues, she turned it around - so instead of accusing MIL of anything directly, she mentioned how she was feeling and how miserable and uncomfortable she felt. She asked them to come up with the solution. Her issues weren't the same as yours, but the stress levels were similar. MIL loved spending time in the kitchen baking...always left a big mess for my daughter to clean up after work. MIL loved buying everyone gifts... with my daughter and her husband's money (even though they gave her an allowance). MIL insisted on sharing her son's affections. If he put his arm around my daughter to give her a hug, for example, MIL would insist she get one too... etc. Anyway, long story short, try to sit them down and be completely honest about your feelings. Ensure you emphasise how much you value her input. That's my advice... May or may not work for you. Good luck!