wow..looks like ur in a tight situation...

wut i would do if i was in ur situation i sthat i would give ur sis a call..let he rno wuts up n how u wana see her...

i think that will be best for all of yall

maybe u should also let ur sis know how u feel,maybe this can be wut help ur parenst her to communicate again InshALLAH..or is it too late for that

sorry im not good with advice,InshALLAH I hope it helps