^ I think she already has a copy of RAINBOW since she's mentioned before that it's the only Japanese music her mom likes.
I don't think she'd appreciate Ayu's trance albums at all; I get the feeling she'd say they hurt her head or are annoyingly repetitive or something along those lines.
I think I'm going to burn two CDs because there's just waaay too many Ayu songs worth listening to. This way, I can include all the songs I really like and also the ones you guys have suggested that I wouldn't really have put on otherwise. I'm probably going to include Last angel and Mirrorcle World and just cut out the intros.
She does like ballads, but she's really picky about what she can listen to in the car. For example, she likes Finally by Brave Brothers & U-Kiss, but it's not a slow, super mellow ballad. I can't really think of any Ayu ballads that sound like a really safe bet as far as my friend goes. :x