She died of septic shock after childbirth. Her family says faster treatment could've saved her

When Ravinder Kaur Sidhu welcomed her third child into the world in June, it was a moment of excitement.

The 40-year-old mother from Brampton, Ont., gave birth at Credit Valley Hospital in Mississauga.

Her healthy baby boy went home, but she never did.

She died days later at Toronto's Sunnybrook Hospital, after her body went into septic shock from a Group A Streptococcus infection.

Her family believes medical staff at Credit Valley Hospital didn't act quickly enough when Sidhu first presented signs of sepsis — even ignoring pleas from the family — and that her death may have been preventable if life-saving efforts were made sooner.

Sepsis is the immune system's extreme response to an infection, which in turn damages the body's own tissue and organs. It is a leading cause of death worl