Wednesday marks a somber anniversary for an Orange Park family and the entire community. Two years ago, 7-year-old Somer Thompson disappeared walking home from school.

Within hours, hundreds of people -- many who had never met the girl -- joined the search. By the time her body was found, thousands who had never met Somer felt the loss.

A large crowd is expected at a vigil to be held for Somer at 6 p.m. Wednesday at Moosehaven on U.S. 17 in Orange Park.

The vigil represents so much more than one killing; it represents a mother's heartache and search for justice.

"Her hair was all pretty in the morning, up in a pony tail. I can't even remember if I told her I loved her," Diena Thompson, Somer's mother, told Channel 4.

A lot has happened in those two years. Somer disappeared when she was walking home from school and police say Jarred Harrell abducted her.

Three days later, her body was found at a south Georgia landfill.

The investigation into who killed Somer was frustratingly slow, but the Clay County Sheriff's Office was persistent.

Video:Looking Back:

On Feb. 11, 2010, Harrell, a former Orange Park resident, was arrested in Meridian, Miss., on 29 charges of possession of child pornography and was named a person of interest in the case.

That same day, Clay County detectives and the Florida Department of Law Enforcement searched a house in the 1100 block of Gano Avenue, not far from where Somer lived.

On March 26, 2010, Harrell was charged with murder in Somer's death. A trial date has not been scheduled.

Diena Thompson said it has been an excruciating wait, and the memory of her daughter is the only thing that has made these two years bearable.

"It is frustrating, but I know it's what has to happen. I've been made aware of the fact that it will take awhile to get this case going," Thompson said.

In addition to the child pornography charges for which Harrell was initially arrested, he is also accused of molesting a 3-year-old girl who was a family friend. Including the abduction, molestation and first-degree murder of Somer, Harrell faces a total of 54 charges.