CLEVELAND -- Edward Czinn remembers his sister Aliza Sherman like many others: warm, humble, with a way of caring for everyone in the world around her.
She was a mother of four, and lover of all children, working as an in vitro fertilization nurse at the Cleveland Clinic.
Her death was a viciously sharp contrast from her life.
"I know Aliza would want us to keep the pressure on," he said. "I don't think she would want the person or persons that are responsible for this to be able to walk away from this without consequences."
March 24, a sunny Sunday afternoon, Sherman never made it to her divorce attorney's office. As she walked from her car, she was stabbed 11 times.
Cleveland Police say they have no suspects or persons of interest.
Aliza was scheduled for a trial just two days later.
Sources tell us her estranged husband Sanford Sherman was among several people questioned after her death. He has hired a prominent criminal defense attorney, Nikki Schwartz.
Cleveland Police say although they have no suspects they are actively working leads and will not let the case go cold.
Who's responsible for her death? Czinn says someone knows.
"This was obviously well planned out, and we know that there are people out there that have information. I think that at this point, for any number of reasons, they don't want to come forward or are afraid to come forward," he said.
"We're confident that will eventually happen. There are enough people out there that have an interest in this case that its really only a matter of time."
Her supporters are in the thousands on Facebook, where Justice for Aliza, a campaign started by friends and family has organized events in her honor.
The next, a self-defense class for women, is scheduled for July 28th at noon at the Beachwood Community Center.
They've contributed $25,000 to a CrimeStoppers reward for information that leads to an arrest. You can contact them anonymously with any tips.