My entire family is miserable this year. DD(9) is shouting and screaming at everyone every chance she gets, refuses to do anything we want her to do (even seemingly "nice" things, like going to a Christmas market), every time she doesn't get her way she's just awful. The only thing she is interested in is talking to her friends on facetime (phone has now been removed as it seemed to make behaviour worse). She told DS this morning that father Christmas isn't real because she was annoyed with us for asking her to get dressed so we could go out. DH is being just as bad, and hardly modelling good behaviour. I am frustrated with him, but also I get how fed up he is feeling as DD is just being awful. DS(5) is generally ok, but keeps arguing with his sister because she is so mean to him.
DH thinks that we need to punish her to show her behaviour isn't ok while I agree that her behaviour isn't on and needs to have consequences, but equally she's a child and angry/ upset. It's quite unlike her too, while she's always been strong willed she is normally pretty cheery. It seems all we ever do in our house recently is scream and shout at each other. I don't even know how it got to this, or what we can do to fix it. The fact it's Christmas time is just amplifying the lack of any goodwill or cheer. Urgh.
Would I be unreasonable to just cancel Christmas and book myself a one way ticket to a beach in mexico? If that would be unreasonable, any tips to sort out us?