Lady Ga Ga and her affect on my teenage daughter

My daughter was in the car with my wife and I and a song from "Lady Ga Ga" came on the radio. She got excited and told me to turn it up. First of all let me tell you that I do not like Lady Ga Ga. She has a great singing voice but everything else about her I do not like. The song sounded really odd and gave me a bad feeling by hearing it so I turned it off. We had a HUGE heated discussion over it and she tried to convince us what the song was about so I looked up the lyrics on the internet and was very shocked at what I read!! (www.metrolyrics.com/test-lady-gaga-2.php) She is singing a love song to Judas, the betrayer of Jesus!! Some of what she says in the song is: "I couldn't love a man so purely even darkness forgave his crooked way" "I'm just a holy fool, oh baby he's so cruel but I'm in love with Judas, baby" "In the most biblical sense I am beyond repentance" ***The most shocking statement in the song was: "Judas is the demon I cling to, I cling to.." What the hell is that?!!? Clinging to a demon?!?!? and she has our children singing this song?!?!!?!?!?! I am fearful of what she is putting into the minds of our teenagers and what other so called artists are doing the same. My daughter claims that she wants to follow God, but also said that she is not going to stop listening to Lady Ga Ga! She was so angry and hates me now that I have forbid anything that has to do with Lady Ga Ga in my house. It amazes me that we can be hated for trying to do what is right, and trying to protect them, and then at the same time not appriciated for the everyday things that we do for them either.