Porky
It's easier for you to say that because the house is yours, but like Yuki mentioned, the house is not hers so quite difficult lor!
Yuki
If I were you, I really don't want to stay with MIL and I will move my things to my mum's place gradually. Just buy a new bed at your mum's place, save the trouble to move your bed there, by the time your MIL knows what you are up to, it's too late liao!