I've offered to cat sit for a week. Individual is going away so cat will be coming to stay in my house they will supply food so I will probably just get a little tray and some litter. I have a cat anyway and hers will be kept indoors. What is reasonable to charge? I'm not rly doing it for money and don't want to be unreasonable but it will require a bit more attention and cleaning from myself as it won't be able to go outside.