I am so cross right now. MIL is here for Xmas. She sets the tone by not bothering to let us know her flight was delayed so hubby spends an extra hour at the airport. Then while we’re chatting just now I ask “you did wear a mask on the plane, right?” - it’s the only thing I’ve ever asked of her, to please wear a mask while travelling to us. (Her son is extremely high risk, and I’ve had long covid and don’t want it exacerbated). Her answer - no. Fml.