I watched this movie about a married woman with a daughter that lives in a house, her father has disappeared or died (I ‘am not sure), she is seduced/lured by an mirror in her house attic, she starts to “travel to a world inside the mirror”, this world is “garden of eden” alike where she find other people and have sex (I remember she has sex with a woman), summing up at the end the mirror world is shown like a desert desolated place, she find her dad inside there and she is entrapped/decided stay in mirror (I think that was the devil that lured her), and the movie ends hinting that her daughter will go trough the same path

PS: I don’t think that the movie is American, looks like Italian but I am not sure, I watched a Spanish dubbed version on TV and my spanish is not so good.