Challenger of the Hunt by Helen Scott

The last thing Roxanne remembers is fighting to get back to the fae realm, but when she wakes up in her bedroom without her generals by her side, she knows something is very wrong. By the time she finds them she realizes that the fight is far from over.
The rules of the hunt are vague and some were never explicitly stated, but she’s broken them, and the council believes she’s put their whole realm in danger.
Now, not only will she have to fight for her place in the hunt, but for her general’s lives as well. Can she keep her generals safe not only from the sadistic tricks of her sister, but the cold blooded members of the council who see them as nothing more than beasts? And can she do it all while making sure that they are ready for the trials and the hunt?
If there is one thing this has taught her, it’s that under no circumstances can her sister get the council seat.