Aitah for not wanting mother in law or adult stepdaughter using MY fridge?

The fridge got warm after I put hot soup in there. Then it was ok. My mother in law said I shouldn't do that. Which led to me having a screaming meltdown and threatening to throw out all their food. Because there food is ruining the freezer
I told them they can't have food in the freezer anymore.
They kept some of the food at the neighbors. Why not all?
They also took off with my late husbands car . technically late husband wanted her to have it because they worked om it together but i don't want to.
My mother in law wants to sue if I don't give my stepdaughter the car .
My adult stepdaughter says it's stupid I need help with everything and act like they are unwelcome but won't give them the inheritance so they can leave.