Family friend

Hey everyone, I need some advice on what to do. I have a family friend that I dog sit for every so often. I have dog sat for since 2021. A month and a half ago I asked her if we could raise the price that she pays me from 30$ to 50$. She freaked out and said no I asked what about 5-10$ more and still said no. I’m currently dog sitting for her right now but I feel like I don’t want to be at her house I’d rather be hanging out at my home. They won’t be back until may 8th.. I was thinking about leaving a note and her keys on her kitchen counter saying that I no longer can do it for that price anymore.