Callahan was the namesake of a new critical services building at the
Health Sciences Centre, which at the time of its opening in 2007 was the "largest health capital project in Manitoba history". She was also involved in the creation of the Registered Nurses of Canadian Indian Ancestry, now called the
Canadian Indigenous Nurses Association, considered the country's first professional organization for Indigenous peoples. The association presented her with a Lifetime Achievement Award in 2014. ==References==