Our friendly little outside cat who used to be feral got herself pregnant before I had spay money. I had no idea how far along she was...And three days ago I went out to feed her and there she was in her storage tub bed,with three babies!We didn't want to leave them outside,there are more strays in our area. So we put mom and babies in a large cage in my daughter's room. Momma cat has been totally fine and calm and roams the house when I let her out. My question is...We have two spayed female inside cats,and the youngest just loves momma cat and lays by the cage most of the day,and plays with her.Our older cat just ignores them and seems a bit cranky. Will we be able to leave the cage open eventually so momma isn't so confined?Or put babies in a large box? I don't have any experience with older cats and another cat's babies. Thanks!