A proposition: if we accept that gothic horror must include a lonely countryside castle, then it (necessarily?) follows that American gothic horror must include a lonely farmhouse in the country. There is even, I believe, pre-photographic evidence of this.
We Are What We Are is a modern (well, set in the past 50 years, anyway) American gothic horror in which days of torrential downpour first kill the mother of an extremely religious and reclusive family, and then begin to unearth certain family secrets.
Honestly, the horror bits are less interesting as plot than as exaggerated backdrop for the coming of age story of the two daughters suddenly thrust into being in charge of the remaining household of their brother (who is too young to take care of himself) and their father (who is too really a lot of things, none of them complimentary, to take care of himself), even though they’ve been unhappy with their family traditions for some time. Just one more thing to come to a head during the week or so of heavy rains that kicked everything off.