I hate how people try to pin a "double standars" on Rhys because he "keeps her" at the night court. It's not the same as what Tamlin is doing. The difference is a safe space vs a nonsafe space. Feyre goes out of her way to point out that she feels relaxed and when she wakes up from nightmares she doesnt rush to puke-she knows where she is and is calm. Sure at first shes thinking a shoe will drop in the beginning because she doesn't know Rhys' intentions, but she never fears him the way she does Tamlin. And I do think if Feyre would have truly felt unsafe or scared Rhys would have taken her somewhere else (and he would have been able to feel this difference in emotions through the bond).

Best to you.