My Grandma and I took the cat to the Humane Society. I asked if they know who this cat belongs to, and they said they had no idea. They also said, they would help find the owner. Otherwise they said, I could just keep her. If I do end up keeping her, they said they would help me get a new collar and the address changed and everything.

Ask the Humane Society if they know who the cat belongs to.

or

Keep the little Kitten