Toronto's Sunnybrook Hospital says Fardosa Abdi, 17, was transferred there Sunday, eight days after the violent assault at the Westgate mall in Nairobi.
In a statement issued Monday, the hospital says Fardosa underwent surgery and a clinical team is assessing her needs for further care.
Fardosa's aunt previously said the girl and her sister Dheeman Abdi, 16, were shopping with the family's maid when the attack began.
Hodan Hassan, who lives in Minnesota, said Fardosa was critically hurt and may not be able to walk again.
She said Dheeman had a bullet break her leg and an explosion injure her arm.
The mall was seized by members of al-Shabab — a Somali group linked to al-Qaida — on Sept. 21.
More than 60 people were killed, including two Canadians.
Officials have confirmed that diplomat Annemarie Desloges was killed and media reports and Facebook users have identified Vancouver businessman Naguib Damji as the other deceased Canadian victim.
Dozens more people were injured, including the two sisters from Toronto.
Sunnybrook said the girls' family has asked for privacy so they can focus on Fardosa's care.