The infant delivered after her mother and two sisters were struck by a car at Costco has died.
Rhiannon Bozek had been in critical condition since she was delivered by emergency caesarian section after the collision at the south London store July 25.
Her sister, six-year-old Addison Hall was also killed in the crash while three-year-old Miah is in fair condition and mom Danah McKinnon-Bozek has been upgraded to good condition.
A vigil for the family drew an estimated 2,000 people to Greenway Park last week.
Police are still investigating and looking for witnesses.
Contact the London Police Service Traffic Management Unit at 519-661-5680 if you haven’t already spoken to police.