She is a complete dick.
At the end of September, the kids don't have school on Friday which means that Son & Daughter would get picked up on Thursday night. However, Daughter has practice Friday afternoon. The Ex's brother is also getting married that weekend, nearly 2 hours from where they all live. Then Son & Daughter would have to come back to our house on Sunday evening. What this boils down to is that The Ex will be doing somewhere around 14-16 hours of driving that weekend. Daughter tells me yesterday that The Ex wants her to skip practice at the end of the month because she "doesn't want to drive that much that weekend." I looked at Daughter and said, "...then don't move two hours away." Daughter replied, "Right?!" ( I typically do not say anything about The Ex that could be perceived in a negative way, but Daughter's reaction confirmed that she is not the idiot that her mother wishes she was - she can see her mother's true color...