URGENT - Cancelling a series of drop-ins partway through?

Sorry for posting this also in the "About Rover" Q&A Forum - I'm not sure which one is better for this question and I really need help!!

So here's my situation: So I'm a sitter providing three days of drop-ins at 7:30PM for a client: yesterday (which already happened), this evening (in less than 4 hours) and tomorrow. Because it snowed at my University, she no longer needs the drop-ins today and tomorrow. But because I performed the service yesterday, I'm not sure what to do. Does she cancel? Do I cancel? If she cancels, what percentage do I still get paid / how much will she be refunded? If I cancel, same question. My cancellation policy is moderate. Please help!! Thank you so much!