How much to charge neighbor?

My rates are usually $150 per night, $175 for holidays. Which is a little bit on the higher end of the going rate around here which range from $100 - $130)

Our dogs play together sometime and she originally asked for my dog sitters number but I told her that I could also watch her dog too if needed.

She said yes and asked how she should compensate me. Should I tell her my usual rate and say whatever works for her? Should I include the holiday rate or send her my prices for everything? I don’t want it to come off as transactional, greedy, or awkward. Maybe she was thinking I’d watch her dog for free.

We’re friendly with each other and she’s really nice.