My dmum has just confirmed that she wants to move in and 'be our au pair' when current (lovely) au pair leaves next year. EEK!
In theory it will help out both of us since she can rent out her house until the mortgage is paid off (she's currently working 2 quite physical jobs to earn enough to do this) and will be bill-free etc with us. And since we have to have someone live-in because of dh working abroad every now and then, it might as well be Mum...but still...EEK!