i have a mini rex that gace birth last week. wasn't expecting it. i was able to get a cardboard box in there for a nest but it wasn't cutting it. 1 already got out and died. i built a real besting box today but could only make it 6 in. inside dimensions to fit in cage door. its 14 in long 9 in high in back and 5 in high in front. i put her in it before i put kits in. she fits but its not any extra room. i put kits in it. will she be able to feed them?