SAN DIEGO -- David Westerfield's lawyer called two people to the stand this morning in an effort to establish alternative ways potentially incriminating evidence wound up in the defendant's motor home.

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Under questioning by attorney Robert Boyce, Christina Gonzales -- the daughter of a woman who lived with Westerfield -- said she helped him work on the motor home in front of the park on Mountain Pass Road sometime last year.

Gonzales could not remember the month when she helped Westerfield with the work.

While doing the work, she said, both she and Westerfield walked down the street to his house "a couple times."

A mother and child were playing in the park at some point, but she did not remember the youngster's gender.

Westerfield, 50, is charged with murder, kidnapping and misdemeanor child pornography in the slaying of Danielle van Dam five months ago. He faces the death penalty if convicted of the felony charges.

The prosecution has introduced hair and fiber evidence found inside Westerfield's 1997 Southwind motor home in an effort to link the victim to the motor home.

The defense has asked a number of witnesses about how often the defendant parks the vehicle outside his home and how many children roam the neighborhood.

One place he parked the motor home was close to a route Danielle van Dam took to visit a friend.

Another witness, Stephanie Escudero, said the motor home was unlocked when Westerfield showed it to her and her husband last year.

"We walked right in," Escudero said.

But neither witness specifically remembered children inside.

"You never actually saw any neighborhood kids inside that motor home, did you?" Dusek asked Gonzales (pictured, right).

"No, I didn't," she answered.

Escudero said she didn't see children around the vehicle, either. It was parked in an area where the van Dam children are not allowed to go by themselves when she toured it.

In earlier testimony, a San Diego police interrogation specialist said a friend of Danielle's mother gave conflicting statements on what happened after a girl's night out on Feb. 1.

Michael Fisher said when he interviewed flight attendant Denise Kemal, she stated that Damon van Dam did not go down to eat pizza with them and that Barbara Easton didn't go downstairs until it was time to leave.

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Damon van Dam "didn't come down at all, I do know that," Fisher quoted Kemal as saying.

The comments go against previous testimony, when it was said Easton visited Damon van Dam in his bedroom when the women returned from Dad's Cafe and Steakhouse in Poway, but both went down to eat pizza after about five minutes. The woman, along with two men, were said to have stayed at the van Dam residence for about 20 minutes before going home.

A Coronado Cays security guard completed her testimony, which began Monday. She said that she saw Westerfield drive the motor home into the Cays the evening of Feb. 3, but she was unable to state a specific time when that occurred.

Westerfield smiled and waved at her as he drove past her security kiosk, but she never saw him again, Mack testified, until he appeared on television.