you do mean Fairmont, yes?
try the Canadian-based interline agencies like Dargal or KVI
small investment get get ASU Guide (she may get the Delta discount rate?)
or try interlinetravel.com--they may have ski pkg (TX base)
I haven't been on ID90 lately--see if they have a trial offer to check it out
hope that helps.
PS--did you call the hotel directly and ask about airline emp discounts? I often get a really good break.
(My sister did this--stayed nearby much cheaper and spent a day at the hotel--you can get spa access if you book massage, etc.)