As designated spokesman for my wife, Ruth, she rates herself advanced intermediate..I know she's comfortable sking any groomers fast, like she does with me,and has skied moderate steeps, crud and pow with clinics and her tele-pals.The ski mags would say "starting to venture off-piste"- she's done well in powder classes at Alta. She's got a pair of Dynistar 4x4 atvs mounted with tele gear that get her around through most conditions. I've skied with Mary however, and Mary's a whole different level.
Ruth's a sport though; I took her to Devil's Castle at Alta with two feet of glop, absolute cement, on our first date and there was, amazingly, a second date. It'd be fun to get her involved.