TAKE the VIA RAIL train to Vancouver,
AMTRAK train to Seattle and then whatever train gets you closest to home. Get a bedroom. Have meals brought to the room. Yes the will do that both on Amtrak and VIA RAIL. In fact they will bring meals to your coach seat as well.
Who will pay for her rehab while she is here in the states?
The insurance payment issues might be huge if she comes south.
In addition the U.S. government may declare her a part time resident and tax her if she stays to long in the USA.
good CBC article at
http://www.cbc.ca/news/business/taxes/canadian-snowbirds-tax-season-2016-1.3451763
