Kate is being Kate. A whiny bitch. Same as always.
And most disgusting of all was to suggest to the children that she was leaving and did they want to say.
Given that the father has left the family this was an unconscionable thing to say to the little ones.
I just finished watching it. I think what bugged Kate more than the cold and rain was how much fun her children were having with Sarah and her family. She was one jealous woman.
She can’t stand not being in control and regained it by threatening the kids with abandoning them. Not a nice person. I feel sorry for her. More sorry for her kids, though.