I have a few questions/comments. (spoilers)

I don't remember anyone driving off in Ines' car. I remember her hearing something, but I thought it was footsteps in the forest. At any rate, I took it that it was the killer, who originally was thought to only be unconscious in the house (which the police hadn't found yet) after Jasmin hit him over the head.

Jasmin was terrified for her life. He half starved her, he beat her, he threatened her. Depending on the individual, yes, I think it's possible to control someone after that short period of time. A lot of what she did, though, was to fool him. She got out when a lot of others failed.

They did look very healthy for kids that have never been outside. I know for adults it's crucial as we age but children may be able to live longer without sunlight.

Jasmin's father told her, when he was dropping her off at her apartment, that he had a security company install locks and cameras so no one can get in. Little did he know who did the installation!

No, the affair served no purpose, aside from letting us know why Karin's husband hated him. It wasn't important to the story at all.

I liked the show very much. If anything I would have liked a couple of more episodes. Sorry you didn't like it.