Friends of missing Guelph coffee shop owner Seble Dietrich took to the streets on Sunday to hand out flyers and ask the public for help finding her, but some say they are losing hope she'll be found alive. 

Dietrich, 39, has been missing since July 11 and police are treating her disappearance as suspicious.

"I​'m not in good condition, I'm worried, it's almost one month today. It's very sad, because it's [a] long time.... before, I am thinking she's going be back soon, but it's now – I don't think she's alive," said close friend Beletu Gamachu.

Dietrich, a married mother of three, owns Sidamo Coffee, located on the second flood of a building on Wyndham street in downtown Guelph. She's well-known among Guelph's Ethiopian and Eritrean communities. 

The rally for Dietrich, who is also known as "Mimi,"  drew a crowd of about 100. The rally started on the sidewalk in front of her cafe, then proceeded to Guelph City Hall and on to the Guelph Police station. 

"I hope that, you know, she is going to be found alive. The fear is right now the longer it takes, people are becoming skeptic, understandably," says Denny Aschenaki

"She is a very religious [woman], very committed and involved in our community. said Emmanuel Mollalijne, a board member of the Ethiopian Association in Kitchener.  "So she is very kind, very helpful and a woman [who] tried to live her life according to the Bible."

Rally for Seble Dietrich

Friends of missing Guelph woman Seble Dietrich walk throgh downtown Guelph on Sunday. (Jane van Koeverden/CBC)

Mollalijne said Dietrich made a CD of religious songs and donated the proceeds to a church in Ethiopia. 

"We all feel sorry and I don't know what to say," said Tigest Tadesse. 

"She was in the church, she helped so many people. She's working in the church, back home [in] Ethiopia she helped so many kids, she's like a good person. I don't know how this comes to her." 

Investigators say Dietrich was last seen driving her car, a red 1999 Mercedes SLK and left her home sometime between 12:00 p.m. on July 10th and 6:00 p.m. on July 11.

Anyone with information is asked to call Det. Manfred Hoyer with the Guelph Police Service at 519-824-1212 ext. 7331.