Chouest was so full of crap that I don't even know what to believe...but I do think the Tiny Naylor's lead is a good one. It makes sense with all the other information we have. Maybe he initially told investigators that she said she was from Kern County, and then retracted it. Ugh, he is one that infuriates me beyond measure...
I find it so weird that he was more forthcoming about Shirley's murder than Lyra Jade's. This makes me feel the circumstances of the murders were pretty different. They were both raped and stabbed by him, but AFAIK, Shirley was not also strangled. We all know the tragic story of what happened to Shirley. I wonder if the true story is a mix of his previous one and the current one with some other elements. Like, he did pick her up hitchhiking, but she was hitchhiking somewhere from Tiny Naylor's rather than from Visalia. Maybe the Kern County thing came from her mentioning a friend or relative in Kern County and he turned it into her being from there. It is hard to tell with him because, from what I gather from my research, he tells lies with some aspects of truth to them, and changes his story a lot. It is hard to know what to take at face value and what to discount as lies.
I also have to wonder if it was a scenario where he feels people would frown more upon the circumstances behind Lyra Jade's murder than Shirley's. This may just be because she was younger and pregnant, though. (Please note, I do NOT agree with this sentiment at all - I just think he may be thinking that.)
It's really disturbing that he killed them 3-4 days apart, and between the killings, had his girlfriend/housemate's sons clean out his car filled with Shirley's blood...and then went on to kill Lyra Jade probably 2 days after that!