Unsurprisingly, the MSM and, apparently, San Bruno PD pooed the screwch when it came to her motive. They had it as a BF-GF thingy gone REEEEALLY bad. Apparently she was living in the San Diego area, 500-600 miles from San Bruno, and her family in the Riverside area (some 400 miles from SB). Her family claim to have reported her several days ago as missing and having a strong grudge against YT. She supposedly was found by Mountain View PD, sleeping in her car near Google HQ. I say "supposedly" because I think the source is her family and possibly unconfirmed )I'm not saying they're lying, just being cautious).
Her family name makes it pretty apparent that she wasn't Scots or Swede, but I sifted through several articles before finding that she and her family are from Iran (even that was brief; I'm guessing they came here in the early-mid 80s, fleeing the bloody Iran-Iraq war). Not sure whether she was of any religion other than whatever went with her veganism (veganism doesn't flow naturally from Islam or Christianity, not sure about Baha'i).