Are they paying for all the things the girls need? They don't pay for anything for the girls. I'm the ONLY one who buys anything . . unless my Mom decides she's feeling generous and buys some diapers.
Are they buying your groceries? No . . again I do.
and how does your sister help?
Does she come watch them so you can get out sometimes? Yes
Is she your transportation when you have to go places? Well not really. My parents are my transportation.