Grad student part time NYC resident

I rent an apartment in NYC for my 23 yo daughter who attends graduate school there. We are NYS residents. She works while at school and is subject to NYC taxes but since she is not there for the whole year, how do I indicate part-time NYC resident on her NY state taxes as there is no option for non-contiguous dates. It asks for start and end date for living in NYC. She is there in Spring and Fall but comes home for Summer even though we maintain apartment there, so she is in the city for about 8.5 months.

 

Thanks