I wonder if Patricia's disappearance might be related to the following Cold Case involving an unidentified girl referred to as Lompoc Jane Doe...
Another girl from British Colombia was murdered in the same general area only a few weeks earlier - probably by John Norman Collins of Michigan.
Unidentified White Female
Located on August 3, 1969 near a quarry on Highway 1, south of Lompoc, Santa Barbara County, California.
The victim died from multiple stab wounds and a slit throat.
Estimated age: 16 - 25 years old
Approximate Height and Weight: 5'4"; 125 lbs.
Distinguishing Characteristics: Shoulder-length brown hair dyed a reddish blonde; blue eyes. She had pierced ears.
Dentals: Available. She had current dental work and "buck teeth". 19 fillings done within the year or two preceding her death. Based on her dental work, investigators surmised that she may have come from abroad.
Clothing: She was wearing sandals with a gold colored buckle, a blue blouse and what appeared to be homemade white pants decorated with a blue floral print, they were hip hugger bell bottons. The clothing appeared consistent with that worn by youth during this time period. She wore horseshoe shaped gold earrings.
Fingerprints: Available. (Poor quality)
Pants Daisy Pattern and Victim's Bucked Teeth
The victim lay a few feet down an embankment, her body dragged there across dust and scrub brush and dumped behind a cluster of rocks within sight of old Highway 1.
Investigators believe she was killed there. She was stabbed numerous times.