"You don't need to come."
Daughter and Baby Girl have their Group sleepover tomorrow night. Husband emailed The Ex about this back on the 13th and asked her if she'd like to pick up the kids Thursday night; she replied to that email nine days after but never addressed the question about the sleepover. As it turns out, The Ex has invited herself to the sleepover. She asked Daughter if she wanted her to stay; Daughter's answer was, "I think [my name] is, but yeah, you can come." The Ex then complained and asked Daughter why she doesn't "ask Mom first?" ( Because Mom doesn't come to her activities. Because all Mom does is complain about never having money or gas, so Daughter's not going to ask her to make an extra trip. Because this sleepover is for the girls, not a mother-daughter activity. Because it's not a competition between The Ex and myself. There are any number of reasons that Daughter did not ask you "first." Come to think of it, Daughte...