Court heard Tuesday that the women decided to end their lives in a tent, pitched in a secluded mountain area near Rock Lake, about 350 kilometres west of Edmonton. 

On May 8, they swallowed some sleeping pills and injected themselves _ and their two dogs _ with insulin, according to a prepared statement put into the record by the Crown. Next, they opened a propane tank inside the tent and went to sleep. 

Hinten Alberta hospital

About 2 a.m. on May 10, when she woke, McNall drove with her mother's body still in the Jeep to the Hinton hospital. 

Crown Prosecutor, Robert Marr said staff pronounced Vann dead and two propane tanks were discovered inside the vehicle, still releasing gas. 

McNall received medical care and was charged by RCMP four days later.A medical examiner determined her mother died from insulin and propane toxicity. 

Vann previously had colon cancer and suffered other health issues as a result of surgery. 

Marr said an autopsy found no active cancer in the woman's body.

Marr said: He believes the assisted suicide case is the first in the province. There have only been a handful of other cases in Canada,  he said. 

Whatever the judge decides, McNall will be deported back to the U.S., said Marr. A doctor has also recommended she be transferred to a hospital there to receive treatment for depression.