08/01/2013 04:00 EDT | Updated 09/30/2013 05:12 EDT

Memorial being held for Manitoba mother, two children found in bathtub

STONEWALL, Man. - A memorial is being held today in Stonewall, Man., to remember a mother and her two children who died last week.

This afternoon's service is for Lisa Gibson, who was 32, her two-year-old daughter Anna and infant son Nicholas.

Gibson's body was found last week in the Red River in Winnipeg, three days after her children were discovered alone and unresponsive in a bathtub in the family's home.

Media reports have said Gibson suffered from postpartum depression and there are calls for an inquest to examine what kind of health care she may have received.

Gibson's obituary says she loved her job as a pharmacist and enjoyed the theatre, running and playing soccer.

The obituary for her two-month-old son says baby Nicholas was just starting to smile and laugh.