All very helpful thoughts. Thanks very much to everyone. I think I'll see if she wants a new board and recommend keeping the Lotus for good powdery days. I don't mind spending the money (I was piggybanking to get myself a modern board, but I too am scared of these modern new-fangled rocker and hybrid boards, so I'll just buy her another one).
I did mean Holy Moly II by Forum, not Lamar (brainfart). Thanks. I'm sure she can get around to riding the Lotus well, but we didn't have a long ski trip and the conditions were all packed powder/corduroy from a lack of snow at Jackson Hole. She just didn't feel like learning the hard way on a short trip.