Helpppp ! Mother in law

My mother in law is staying for 6 weeks I’m a week in and my partner is mostly at work and it’s just us she is just speaking French at me and I’m using an app to understand her she takes the baby out of my arms keeps asking to sleep with the baby at night which I find possessive then is not safe with the baby she wants to sleep baby face down sleep baby on a pillow it’s been exhausting to enforce this boundary that I need time with the baby do not change how we look after the baby she is also cooking all the time when he’s asleep and making a huge mess won’t let me do anything today she said she’s clearing out the garden she’s extremely controlling I’ve tried talking to my partner but it’s his day off and he just left the house all day I’ve tried to see the positive side that she’s trying to help but my gut is telling me she has mental health problems and I really don’t need to be in this environment with my baby I don’t know what to do is it wrong to take the baby and go to my mums until she has left should I go out and only be home when my partner is back from work it’s also caused a huge issue in my relationship with my partner he is avoiding her snapping at me now they’ve just been shouting in the lounge for 3 hours while I’m in the room with baby i guess they are shouting about the situation but I don’t know I just want to do the right thing