AITA for refusing to pay rent for my baby girl until my family purchase her the things she needs?

I'm 25M, I was a planned baby and my parents are pretty adamant that they wanted only one child. My family all live in one compound, all 8 of my grandparents and their spouses live in the 4 houses in this compound, so there's one for each set of parents. I wasn't allowed in anyone's house as a kid if they didn't want me there. This is something I brought up to them when I was trying to convince them to buy baby things for her. My girlfriend "Amy" (24F) has a baby girl "Leia" (3F) from a previous relationship. Amy's mother lives about an hour away, so it's not practical for us to go there all the time.<br><br>I proposed to Amy about 6 months ago, and we started making plans for our wedding in the summer. My family were very happy until they learned Amy has a daughter from another man. They got very mad at me for not telling them sooner and told me Amy and Leia are not welcome in the compound. They have elaborated that their opposition to Leia is not only due to her paternity, but also her young age. They elaborated that they believe a woman with a young child (under 5) hasn't fully grown into herself as a woman, and are often still figuring out the child and their place in their life as a mother. Amy hasn't been allowed in the compound since. I still go there to visit my family, and I still sleep there some nights.<br><br>Amy and I ended up cancelling our plans for the wedding, and Amy suggested we move in together instead. I agreed. We decided Amy would get rid of her old apartment to save money, so we moved all her stuff to my house and she moved in with me. Amy didn't pay rent in November, and when it came time to pay rent in December she planned on telling her landlord she was moving out. On December 1st however she received an email from her landlord saying they'd received a complaint from Amy's former neighbour that she had moved out already, and that her landlord had been in the apartment and confirmed it was empty. They said her lease was being ended immediately and she wouldn't receive any of her deposit back.<br><br>Amy was pretty upset because she didn't have any savings, and she didn't have anywhere else to go. I didn't want her to worry about all that so I told her she could move in with me. Now Amy and Leia live with me. A couple weeks after they moved in, my family called me and asked me what all the stuff outside my house was. I told them it was Amy and Leia's stuff, but they insisted I get rid of it. I told them I couldn't because they're living with me now and Amy doesn't have enough money to replace any of it. My family asked me to pay rent, and I said no because they refused to let Amy and Leia inside. I argued Amy and Leia need a place to stay, and Amy needs all that stuff to take care of Leia.<br><br>My parents told me I was being selfish and that I need to pay rent for two extra people whether they're allowed inside or not. My extended family got involved and said I was being selfish and entitled for not paying rent for the extra people I'm harbouring. They all kept insisting that Amy and Leia aren't allowed inside because they're not family, but I feel like my family are being selfish asking for rent for people they refuse to treat as family. AITA?