Clara Harris ran over her cheating husband at least two times, not just once as the defense claims, a Houston police accident investigator said Monday.

Officer Rolando Saenz, in a hearing outside the presence of the jury in Harris' murder trial, said earlier testimony by defense collision reconstructionist Steve Irwin was flawed.

Saenz was to testify as a prosecution rebuttal witness after the defense rested its case Monday morning with sympathetic testimony from the dead man's family.

Irwin testified the turning radius of Clara Harris' Mercedes-Benz would have made it impossible for her to circle back and hit 44-year-old David Harris repeatedly in a suburban Houston hotel parking lot on July 24. Saenz, who has investigated more than 10,000 collisions over nearly two decades, disagreed.

"As you make a left hand turn, sometimes (the back end) will swing out right and it will change the turning radius," Saenz said, explaining how the car might have made turns tight enough to swing around and run over her husband's prone body more than once.

The distinction is important because Clara Harris says her husband's death was an accident.

Prosecutors say Clara Harris intentionally hit her husband, and to prove their case they have produced evidence showing he was hit multiple times.

The defense rested Monday after calling David Harris' mother, father and brother, who all said they believe the accused murderer is a truthful, law-abiding person.

"I've always known her to be truthful," the victim's brother, Gerald Harris Jr., told jurors. "She is one of the most law-abiding people that I know."

David Harris' mother, Mildred Harris, added that Clara Harris, 45, has been "more like a daughter than a daughter-in-law."

Mildred Harris told jurors, "David loved Clara very much. In 10 years, he never had anything negative to say about her. She loved him very much, sometimes too much."

In cross-examination, prosecutors insinuated that the only reason the Harrises support Clara Harris is so that they can continue to see their two grandsons, and Clara Harris is the only one who can make that happen.

"(The) bottom line is, you love the boys and you want to see them and the defendant controls that right," Prosecutor Mia Magness asked.

"I don't know what you want me to say but I have no problem seeing those boys," Mildred Harris testified.

The last time Gerald Harris, a psychologist, testified in a high-profile case was the competency hearing prior to last year's trial of Andrea Yates, the southeast Houston woman eventually convicted of murder after drowning her five children.

Then, as now, George Parnham was the lead defense counsel.

Several of David Harris' family members have attended the trial in her support.

State District Judge Carol Davies ruled Parnham only could use snippets from a two-hour taped conversation Clara Harris had with police the morning after her husband's death.

The judge called it a "rambling conversation," which is exactly what the defense wanted to portray to show the woman's agitated state of mind.

Prosecutors argued only the state could introduce the tape, but Parnham chose not to use any of it, saying it needed to be used in its entirety.

Last week, Clara Harris recounted the evening she and her stepdaughter caught David Harris with his receptionist-turned-lover Gail Bridges at a suburban hotel last summer.

The defendant wept Friday as she told jurors she was aiming at Bridges' luxury sport utility vehicle and did not mean to kill her husband.

"You used what you had available, didn't you?" prosecutor Mia Magness asked Harris of her attempts to keep her husband from his lover. "You tried to separate him from her with your car?"

"No," she responded. "You've got it all wrong."

The dentist claimed she accidentally struck her husband with her luxury sedan July 24 in the hotel parking lot. But Magness contends the defendant intentionally killed her husband, striking him "again and again and again."