I've always had great advice on MN about MIL issues.
I posted about awful showdown with MIL some months ago.
We've since very superficially patched things up but I don't like her, don't trust her and don't want to wake up in her pad on Xmas day.
She thinks it's her turn to have us for Xmas despite this row.
Is it OK for me to say no, not ready to spend Xmas with you, want more time?