In October, a friend asked us to care for her cat for a month. She wasn't able to pick the cat up after the month was up because her mom said she couldn't have it at the house. So, we have cared for the cat for almost 4 months now with no contributions from her. Now, my 7 yr old daughter is in love with this cat. We told her it was her cat now and she has helped in caring for the cat. Now, the 19 yr old girl wants her cat back. She hasn't asked about this cat at all since October when I picked her up. What are the laws if any about ownership of this cat, that would have had nowhere to go if we didn't take it in?