ID=6540277CLEVELAND -- Police say they've gotten a second look at evidence, they've even had undercover officers canvas this area near the Galleria for a motive in the murder of Aliza Sherman.

But it's not enough to name a even a person of interest. Sherman was stabbed to death near East 12th Street, on her way to a meeting with her attorney. A contested divorce trial was to start that week.

Her daughter, Jenn Sherman, says in a trying year, she's learned many things. Mostly, how to wait.

"For us, one minute is too long without justice. So one year, five years, no matter how long it takes, we will continue to fight," she said.

"I thought within a second somebody would be arrested or caught or something. So each day that went by, in the beginning, it was difficult," said Jenn. "As the year has gone by, I've learned to understand that it is a process."

"It seems personal to us," said Deputy Chief Edward Tomba.

Tomba says the case is not cold; detectives are using new strategies to tie up loose ends.

In a year, they've identified a suspect, a masked figure dressed in black running from the crime scene, but they have no name.

They've enhanced the video, talked to experts, had the prosecutor's office weigh in on evidence, they've even had undercover officers canvas the area for a motive.

But they say with no eye witnesses and no murder weapon it's challenge. Her estranged husband won't talk.

"Are you guys in touch with Sanford Sherman?" asked Channel 3's Sara Shookman.

"We're not, no. Not at all. He's retained an attorney so a request or any discussion that we would have, has to go through his attorney," said Tomba.

"Sometimes people we talk to hear his name and they jump to conclusions. You can't do that in your job?" asked Shookman.

"No. We've heard that, but we have to deal with evidence and we have to deal with facts," he said.

Police know someone knows the facts behind Aliza's murder. And they hope, like Jenn does, that person comes forward.

Jenn says she knows her mom would be proud of her efforts.

"The bond that I have with my mom is unbreakable. Even though she's not here with us physically, I know that she is still very much with me," she said. "My love for her is unconditional and it fuels my fight for justice. I know that we will never stop fighting."

Monday, March 24, is the anniversary of Aliza's death. Jenn and her loved ones are inviting anyone to come to East 12th Street and Hamilton at 5 p.m. for a ceremony of remembrance and a way to empower women.

You can find out more about the event by clicking here.