Does this sound wrong to anyone else or just me!

Had a little arguements with my W a few minutes ago. It all started with her wanting to show me a music video on YouTube. It's called "Thrift Store" or something like that. A made a comment about how her and D15 really enjoy the song and thinks its funny. W said it is a little inappropriate so younger kids haven't heard it, but D15 "hears a lot worse in the hallway at school" i didnt think it could be too bad because of how light hearted W portayed it to be. I said ok and went to watch it. W came in the room and so did D4 and S10. I started to play it just as they walked in, wife was standing there and said something like "oh go on, can't shelter them " so I hit play again. After the first "F" and "MF" combo I quickly stopped it and sent the kids out of the room. I played it once they left. There were a lot more "Fs" and "MFs" and "c?&k" and ...... Everything. Any curse word tou can imagine.

Now I must say for my personal sense of humor, the song was kind of funny, but I look at W and said how I can't believe she let D15 hear this. She again said something about her hearing worse at school. I told her that I disapproved and there was a difference in knowing what may or may not go on at school and condoning my daughter listening to that music.
Needless to say the W got mad and said she didn't like me questioning her parenting. WTF is that. I first said "I'm not questioning, I just don't agree with it". She stomped off.

Who is this woman? It's not the old W for sure! It just adds to my suspicion of MLC because it seems like she wants to be D15s friend! Did I do anything wrong? Does anyone else see her side of this?