Just because she made Christian music in the past, doesn't mean her current music is. So yes, I'm confused why you are calling her covering a Smokey Robinson song "christian rock." Furthermore, I honestly doubt Christian music is going to be making jokes about penis size (Size Matters), innuendo about turning her on (I'm a Bomb; Stumble) or saying "bitch" (Weightless). Gtfo cunt.
On a side note, I am the Utada whisperer. I found two high notes no one has mentioned before. C6 on Celebrate, and an E6 in Stay Gold. http://picosong.com/UTGz/
And #HiddenLyrics : http://picosong.com/UdqP/