"It's been over a week now so it's hard, it's hard to keep pleasant thoughts, so just to see everybody out here, saying all their prayers together with all their hopes, it keeps our hopes up," said Popowych.
"This is a vigil for her," said Streek. "Hopefully she can feel the spirit that we have here and she can feel how much we're behind her and waiting for her to come home."
On Friday, RCMP released mall surveillance video in the hopes of identifying people who used the same exit around the time O'Rielly left.
Police, who have not ruled out an abduction, are hoping to speak to anyone seen in the video and anyone who was at the mall between 6 p.m. and 9 p.m. that day.
O'Rielly's husband Harold recently retired and she was planning to retire in a few weeks. The couple were planning a long-awaited trip to Florida.