RCMP say the incident happened early Monday morning along Wolverine River outside of Tumbler Ridge, in northeast B.C.
Police say it's believed the suspect and her boyfriend were having an argument and when she tried to leave she allegedly backed a pickup truck over the family.
The mother and her kids were quickly pulled from under the truck and taken to a local health centre by other campers.
Police say the 20-year-old mother received the most serious injuries and remains in stable condition in Dawson Creek Hospital while her three-year-old son had a cut to his head and an 18-month-old boy was not hurt.
Mounties say they've been told that the female suspect has received death threats over social media and that their investigation is continuing.
Also on HuffPost