Can someone please tell me about what ths part of movie Can't Buy Me Love meant?

At end of movie Cindy mancin sees Ronald Miller mowing the law and stops hia nd says, This shoudl cover it. was she referrng to the money she is paying him to do her lawn or the 1000 she took from him hen she rented him? Please reply asap as I just thought of this when i saw movie tonight. I kinda always thought she was paying him back the 1000 but just tonight I was thinking was she referring to the lawn. I was kinda hoping she was paying him the 1000 so then she is with him now because she fell in love with him and wanted to pay him back. She broke the agreement by leaking out at New years eve party that he paid her to pretend they were dating.