Mavis is Annoying
I couldn't understand at first why I didn't like this movie that much and then it clicked.
In HT1, Mavis was dying to get out into the human world. She was unsatisfied and unhappy with her current lifestyle. So flash forward to HT2, and everyone, including her husband and child, are happy but she makes this arbitrary decision that she wants to move where Johnny's from without even consulting with her husband? That's an awful partnership. Everyone's going to be miserable but her, and then, she was willing to subject her child to her condescending mother in law. Yeah, that's better for the boy.
Still a child, she just had a baby.