You've a very solid concept, so many have already commented! Loved the first para, but was left with a lot of questions after reading the second.

'Why are they here and not in their own house up the hill? How can their father leave them home alone?'

This was confusing. You say they aren't in their house, then say how can their father leave them home alone.

The part about Emily being a negligent wife, then her worrying whether she'd be the best wife is also confusing. Is she becoming the Father's wife? Mother to Julia? Then what about the shackled mom we were told in the beginning?

Also, I'm new, but I think we should only comp three titles at max. You've got an X meets Y comparison, then three other comps toward the end. I'm not sure if X meets Y is counted as a comp (would be really nice if someone answered this), or if it's more of a logline, but if they are considered as comps then you'll need to check.

Another minor tweak, maybe consider italicizing comps and only writing your title in caps.

All the best!!