I look after a friends DC before and after school a few days a week when she goes to work. I'm not registered or anything but it works out for both of us and I charge her £10 per hour. She has recently been signed off work sick so doesn't need me. She offered to pay me for a couple of weeks as it was short notice but not for the full time she is off. Am I being unreasonable to ask to be paid seeing as she is being paid?