Parmjeet Kaur, however, managed to get her young daughter Komalpreet out of the vehicle unharmed before the man drove off, said police in Winnipeg city, where the incident took place on Wednesday.
Kaur was dusting snow off her vehicle in West Kildonan, a residential suburb of Winnipeg in Manitoba, when a man came up to her and demanded car keys.
When she refused to hand over the keys, the man stabbed her in the lower body, police said.
Police are now looking for the suspect in the case.