Penny

You had a car accident with her, and you bought her a hospital. The good thing is her body wasn’t damaged at all, but the bad news is she has pumped her head, and she doesn’t know anything about herself. By her belongings, you can only tell her name is Penny, and she’s probably pretty rich. You have offered her to stay with you until she gets her memory back, since she had nowhere to go and nobody to rely on.