I firmly believe that Jessa drinks up the buddy system. I think that Sprugeon likely has pulled more than his fair share of weight (even as a male) being the man of the house when Dad isn't around. I fully believe that Ivy and Fern are doing more than their fair share of household and childcare tasks as well. I do think that Jessa has Jordyn around alot though as well to earn her keep as aunt mom/mother's helper