Crossed posts, Ginny.
If I were you I would start making plans now for MiL's future (talking to her about it, of course) If you feel that living with you is not on, then could she live somewhere where she gets companionship when you are not vising her?
If you are actively making constructive suggestions - and being honest but not brutal about loss of space and freedom - you could work something out between you. If you leave it as vague hints, you could find yourself in an emergency situation and making hasty decisions that everyone will regret.
Have any of you got all electric cars? Pros and cons please.
Angela Rayner lashes out and calls Sunak “pint sized loser”.