My Child-Free Wife Attended Her Ex-Boyfriend’s Child’s Parent-Teacher Meeting

I have a wife who never means what she says. She claimed she didn't like children and wanted to be child-free, yet turned around and attended her ex-boyfriend's child's parent-teacher meeting as the child's mother. When my mother was hospitalized, she said men weren't as attentive as she was and offered to look after her. The very next day, she broke her promise and went to an amusement park with her ex-boyfriend's family instead. Now that her ex-boyfriend's child has gotten into trouble at school, she's furious and has come after me, demanding that I take responsibility as the child's homeroom teacher. She nearly cost me my job. Once I saw her for who she really was, I applauded and cheered, “You really are a perfect family of three.” If that's how it is, I'm done playing along. But now she's crying and begging me to give her another chance.