Is OTHER wrong in the post ? POST : I broke up with my girlfriend about three weeks ago. There were a lot of reasons but the relevant ones were, in very generic terms, a pattern of immaturity, laziness, consistently passing off all financial, household, and parental responsibilities to me, constant absence, and lack of communication. She has a five year old son from a previous relationship whom I adore, is flat broke, and has tons of shit here so I told her she could live here until she figures something else out. Her family also lives about 700 miles away and she can’t move back with them without abandoning her kid to the father.
She only has her son on the weekends and only works on weekend nights so I’ve also been watching him while she works because I’d rather him not staying on someone’s couch with her.
Since we broke up, she’s been avoiding me and communicating even less. She says she’s been looking for apartments but she’s been home napping and watching tv while I’m at work and goes out before I get home. I’ve told her if she’s still living here, she owes me the communication of whether or not she’s coming home and when she expects to be home (AITA there?).  She does this all week until she has her son and then she expects me to be there to play house with her. 
Sunday, she went to go stay with a friend who lives two hours away. She keeps telling me she’ll be home the next morning but then at night of the day she said she’ll be home, she texts me saying she’s staying another night. Other than that, no communication. She’ll be home Friday with her son and expect me to watch him, despite not communicating any of that to me, and I’ll do it because I don’t know what else she would do with her son in tow.
I feel disrespected and used and like I have no control over the situation. I’m thinking of asking the management office to have the locks changed tomorrow while I’m at work, before she gets home (if she comes home tomorrow at all).
I’ve really tried to be civil and helpful through this and I don’t want to make a move that is going to hurt the kid but I’m sick of her using me and my place on her whim. WIBTA?