Alleged prostitute Alix Tichelman pleads not guilty

Alix Tichelman looks back toward her family in the public seating area after her arraignment in Santa Cruz County Superior Court in July.

Public defenders Jerry Christensen, far left, Larry Biggam and Athena Reis answer reporters’ questions at the Santa Cruz County Courthouse after their client, Alix Tichelman, was arraigned in the death of Forrest Hayes, a Google executive, by heroin overdose in November.

Alix Tichelman, left, confers with public defender Diane August during a court appearance in Santa Cruz Superior Court on July 9.  (Shmuel Thaler / Associated Press)

A car sits in the driveway of the Folsom house that is listed as the residence of Bart Tichelman, father of Alix Tichelman, who has been charged in the death of Silicon Valley executive Forrest Hayes.  (Rich Pedroncelli / Associated Press)

A message is taped to the door of the Folsom home that is listed as the residence of Bart Tichelman, father of Alix Tichelman, who is a suspect in the death of Forrest Hayes.   (Rich Pedroncelli / Associated Press)

This undated photo provided by NorthFulton.com shows Dean Riopelle, 53, who died of a heroin overdose in September 2013 in Milton, Ga., about two months before tech executive Forrest Hayes died of an overdose on his yacht in Santa Cruz.   (Jonathan Copsey / Associated Press)

The house where bar owner Dean Riopelle overdosed Sept. 17, 2013, while at home with his girlfriend, Alix Tichelman, in Milton, Ga.   (Ron Harris / Associated Press)