Soon to be mother in-law disgusted with the idea of kids moved in with us!

Not only has she moved in, but she doesn't want us to move out and have our on place. She looks disgusted when I mention babies. Tells me she knows for a fact her son doesn't want kids. But he tells me other wise, she also wants me to quit my job to stay home and clean house all day.. She has three other grandkids... She adopted my fiancee when he was 5 months... Does it have something to do with the fact he is not her blood child? Idk it just hurts to think she wouldn't want us to be happy.. will she love our baby? 😞She has said it before if she could take back having kids she would of never had any I just don't understand any advice!? BTW we are still looking for our own place she can have this house. I have talked with my fiancee but it's his mom he doesn't understand where I'm coming from we are currently ttc #1😩😭