My 15 year old cat went out as usual to do her business on Saturday night, but stayed out longer than usual. When she came back she was soaking wet and very cold. We dried her off and gave her lots of cuddles and she seemed fine. However, the next morning she was very unresponsive and lethargic and refusing to eat. She has spent the last 36 hours curled up in her basket, occasionally walking slowly to drink some water and use her litter tray, but she won't eat or engage with us. We think she may have caught a chill from getting so cold and wet. She is an ex feral who has never been in a carrier before so we don't want to inflict the stress of a vet visit on her if possible. Any suggestions about what we can do to help her?