Police say they are in critical condition.
The pair were discovered by the woman’s husband when he came home to find his wife lying in bed, unconscious.
Police said the 7-year-old was lying beside her mother and vomiting.
The man immediately called 911.
The husband said he was concerned his wife had overdosed on medication.
Doctors are examining the girl to see if she ingested any drugs.
The other three children in the house were taken to the hospital as a precaution, but police say they are in good health.
Laval police are investigating.