My mom and dad never "paid" me, but they always paid for lunch, gas and special treats. They also gave me their car when they were no longer able to drive because that was the vehicle we were using for shopping, appointments, etc. This made them feel better about the situation. I knew I would have trouble with two of my brothers over it; and I did. In the end, my niece wanted to buy the car and I told my mom to sell it to her; which she did.
These situations are difficult, at best. My heart still aches when I think about it.