I actualy laughed out loud at most of your long qoute descriptions & enjoyed the whole thing. I just watched the movie & it had more then one schoking turning point. After long rooting for the greatest individual in that shit hole - schok-surprise & a period of intense waiting to see who is now the bad guy.
I was surprised with the last part of your take on it - that you didn't like it & I think I can clear some of it that you didn't understabd.
It was not Prometheus like ''make your own end'' and many other details ( btw.excuse my spelling/english) But I was left with some heavy questions about morality & ethics.
Biels character turns out-not to be some psycho (killer) The mute girls is greatfull at the end,loves her second mother/Biel, which is now a ''monster'' just so children can have a life. Now, this was as you say ''small town-mine closed'' place. Very much like ''wrong turn'' slashers, full of freaks becouse of the closed mine toxic watter & in breading. The new born baby she practicaly saved,was not taken to any hospital. Mother of the mute girl asked Biel to stay quiet / not to register the baby. This makes you think that the father was some brother,father, step father or something. The place was awful & with the mute girl self-choice & the curly boy in the end is telling us how all those children are defenately better...I have a realy hard time saying that it's wrong.