High priced prostitute Alix Tichelman has pleaded not guilty to killing married Google executive and father of five Forrest Hayes with a fatal dose of heroin.

Tichelman, 26, was arrested after CCTV footage identified her callously stepping over the body of 51-year-old Hayes, to finish a glass of wine, before fleeing his yacht.

She denies charges of manslaughter, prostitution, destroying evidence and transporting a controlled substance.

Her lawyer, Larry Biggam, said she and the former Apple executive, from Santa Cruz, California, were taking drugs together consensually and that his client had no intention of harming him.

"To demonise and sensationalise and totally blame Alix Tichelman for his death is unfair and simply wrong," he told reporters outside court.

The pair met via the Seeking Arrangement website, which pairs "sugar daddies" and "sugar babies" for "upfront and honest arrangements with someone who will cater to your needs".

Police said the video shows Hayes suffering "medical complications" and passing out after being injected by Tichelman. She then leaves the scene instead of staying to give him first aid or calling for help.

On the video Tichelman stepped over Hayes at one point to finish a glass of wine, according to investigators, who added that she pulled down the window blinds to hide the body from view before leaving the scene.

Police said they found her fingerprints on the wine glass and traced her to her home in Folsom, where she lives with her parents.

She was arrested after officers lured her back to Santa Cruz County by setting her up with a fake client who said he wanted to pay her $1,000 for sex, who she agreed to meet at a luxury hotel.

"There was no intent to harm or injure, much less kill Mr Hayes," Biggam added.

"Why would she? He was a lucrative source of income to her; she appreciated his generosity and she had a motive if any to elongate not end the relationship.

"This case is about two adults who were engaged in mutual consensual drug usage in the context of a sexual encounter initiated and encouraged by Mr Hayes.

"At the end of the day all the speculation and the sensation and the hype is not evidence. We're confident it's clearly not a murder case."

In his obituary, Hayes was described "as a loving husband and father".

The judge denied Tichelman's request for her $1.5 million bail to be reduced, and she was ordered to remain in custody.