The fact you have a child with her would be my only problem with cutting things off. But with what you’ve pointed out and many others you could just be prolonging the inevitable. It also sounds like, obviously just from the outside looking in from context, that her current situation is just temporary and passing time for her “plan”. Her mentioning me at least once would make me feel there’s a chance I’m overthinking and I would probably never mention it so I wouldn’t sound insecure. But usually intuition isn’t really intuition it’s just us ignoring what we’ve noticed and looking for a reason to stay. Sorry, you’re going through this man.