Momma Coop likes Foghat, The Doobie Brothers, some older Van Halen and even some Megadeth (as an example, "Sweating Bullets"). She's also a fan of the ol' doo-wop groups. What she's not fond of, is electronica/dance/trance and all that (which rules out a healthy chunk of OCR, VGMix and such).
Regarding game music, she's not a listener. It doesn't factor into her life at all really. However, I can say the origin of the music doesn't matter as long as it's enjoyable to her. She's heard remixes that she liked and others she didn't, knowing they were remixes from a video game, so...