(commenter colormist) I really enjoyed it. I wanted this to be one of those books that I pass on to my mom and say "OMG, you have to read this!" which I would have if it had 70% less sex in it. That being said, I will enjoy it myself and never mention word of this book to my mom.
I can appreciate her perspective but I just couldn't help thinking, your mom probably knows about sex. ;-)
Note: I don't recall that there's a ton of sex in the book so don't let that deter you from this great fantasy novel!