Yes, in Campbell and Elle's relationship. Frequent emotional manipulation, isolation, intimidation, and sexual violation. Physical violence (drowning) in episode 4. Burn marks visible in episode 9.
No but in episode one there's a very brief interaction between one of the kids and his at best neglectful foster parent (from his tone there's implication of probably more than that though nothing's shown). And in other episodes he talks about being bounced around between foster homes.
"Kind of. He hurts her during sex and she doesn’t wants that obviously. So i guess that counts"
Yes this is non-consensual violent activity during sex. A 1000% yes this is sexual assault. Not sure if the comment saying "I guess" can be deleted (and my subsequent post here) but it is not appropriate to make that a grey zone.
A girl is arrested and during interrogation she gets her period. The guard won’t let her use the bathroom. They bring her a panty liner and force her to change in front of them. They show blood on her dress.
The one character who lived outside town is said to be homeless at first. He is taken in by others. Everyone ends up with somewhere to go, most moved in together into communal houses.