JACKSONVILLE, Fla. -

When a fellow shopper at a dollar store offered to take Rayne Perrywinkle and her three children to Walmart to buy them McDonald's and buy a dress for her 8-year-old daughter, she graciously accepted.

But police say that 56-year-old man was a sexual predator, not a Good Samaritan, who seized the opportunity to snatch the woman's daughter and kill her. The slaying marked a tragic end to Cherish Perrywinkle's short life, most of which she spent with a mother who fought with the girl's father over child support and custody.

Funeral services for Cherish were held Friday afternoon at the Paxon Revival Center Church in Jacksonville. Pastor Steve Dobbs tried to comfort the hundreds of mourners present,but also had a message about the man accused of killing the 8-year-old, Donald Smith.

"We need to change the law, the law that allowed this man to go free," Dobbs said, adding that he didn't want Cherish's death to be in vain. "Don't let us lose another beautiful girl."

Mourners filing out of the Westside church -- some heading to graveside services at Riverside Memorial Cemetery -- were equally angered that the system allowed this child to die.

View funeral | Family photos of Cherish

"It’s unbelievable, and something has to be done," Owhnikka Cooper said. "It has to stop."

Smith had a rap sheet of convictions for sex crimes against children back to 1977 -- when he was 21 years old.  He was released from jail only three weeks before he met the Perrywinkle family.

Another issue has also emerged from the case: the hours that passed before realizing Cherish was kidnapped by a registered sex offender and the public was notified.

Sheriff John Rutherford blamed the delay on a failure in the chain of command and promised changes.

Cherish was born Dec. 24, 2004, after her mother, an exotic dancer, and her father, a sailor, had a one-night stand in 2004. Perrywinkle, 45, sued the father, Billy Jarreau, 43, for child support three years later, and the two fought for custody of the girl for the rest of her life. They traded accusations over how the girl got head lice and how she was dressed, as well as money.

In April 2010, a court-appointed evaluator recommended that Cherish live with her father -- who, by that time, had moved to California with his new wife. The evaluator wrote that "neither parent was perfect" and acknowledged that it was the hardest case he had ever tackled.

The evaluator said that Jarreau "hasn't shown himself to be a real enthusiastic player in terms of parental involvement," and noted that it might be difficult for Cherish to move across the country away from her mother. But Perrywinkle had some troubling issues, the report noted, including eviction, a lack of money and some admitted mental health issues that led her to make poor choices.

"I fear for the child's future living with Ms. Perrywinkle," wrote evaluator Robert Wood. "I do not make my recommendation lightly. I have given many, many hours of thought to the case."

Despite that recommendation, a Jacksonville judge ruled Cherish should live with her mother.

Donald Smith JSO mug shot That same year, down the halls of the very same courthouse, another man's case snaked through the legal system. Donald James Smith, charged with impersonating a state child welfare officer and making an obscene call to a young girl in 2009, attended hearings for years and was eventually found guilty -- but with time served he was ordered to spend only a year in jail.

IMAGES:  Donald Smith's criminal history

Smith had been arrested 19 times since 1977. He had been found guilty on lewd and lascivious charges, charges of trying to lure girls in a van and charges of showing pornography to minors.

Richard Kuritz, a Jacksonville defense attorney who is not connected to this case, said that Smith's light treatment on the 2009 charge underscores how difficult it is to prosecute some sex crimes. Jacksonville prosecutors, he said, are not known for seeking light sentences.

"Often times the state's hands are tied and the state will resolve a case for less than what they want because the victim doesn't want to go through the process," he said. And with cases such as the one in 2009 -- where Smith was accused of posing as a state worker and then making an obscene phone call to a girl -- there is little physical evidence.