AITA for going off on my ex’s girlfriend for taking my daughter out of state to visit her family and saying I no longer want her around my daughter.

Co-parenting is already hard enough when you’re dealing with an ex, but it becomes an absolute nightmare when someone new tries to step into a role that isn’t theirs. I (28F) share a 7-year-old daughter with my ex-husband, Liam (44M). He’s been dating a woman, Ellen (33F), for only six months, but in that short time, she’s already tried to crown herself as my daughter’s “second mom.” At first, it was just little things—wanting to be involved in conversations, pushing boundaries—but recently she crossed a line so big I couldn’t stay quiet anymore.

The “Second Mom” Problem

Drop-Offs and Unwanted Opinions

Four Hours of Waiting

Out of State Without Permission

The Ultimatum

No More Ellen

Let’s check out how Redditors are reacting to this situation.

At the end of the day, I don’t think I was wrong for standing my ground. This wasn’t about Ellen “bonding” with my daughter—it was about her completely ignoring my role as a mother and making a reckless decision without my knowledge or consent. Taking a child out of state without informing the other parent is not “cute” or “fun,” it’s dangerous and disrespectful. Now, I’ve made it clear: Ellen is no longer allowed around my daughter. My family thinks I overreacted, but honestly, if protecting my daughter’s safety and boundaries makes me the bad guy, then so be it.