It was reported that Laci took Lamaze classes. I think someone even interviewed a couple who were Lamaze partners with Laci and Scott, although it was said that Scott didn't attend all the classes.
Since Lamaze advocates birthing with as little drug intervention as possible, it seems highly unlikely that it would have been Laci on the Petersons' computer, researching drugs such as GHB, which might be used to affect the cervix to facilitate birth. So if there was research on the Petersons' computer about GHB, it seems highly likely that it was done by someone other than Laci. This would point the finger at Scott.
This "conclusion" is just not as obvious to me as you make it seem.
When my daughter was born it seemed to me that in California about 95% of first time pregnant middle class women went to Lamaze classes. Of these, it seemed that the number who actually succeeded in having a vaginal delivery with no drugs of any sort was surprisingly small--I think less than 10% or so. Of the new mothers in the hospital at the same time as my wife and I, 100% had been to Lamaze classes, 0% had a drug-free delivery.
This was 22 years ago--before the internet, and before search engines.
I can easily envision Laci, who would have time on her hands, researching anything and everything about childbirth. She was upper middle-class, intelligent and clearly preparing for her baby. Given the choice between daytime TV and internet research, I think she would have rapidly become bored with TV and instead researched even low-probability things on the internet.
IF LE can connect Scott with an illegal purchase of GHB in the right time frame, and there was GHB in Laci's body then the theory starts to look better. Otherwise it is a very fragile circumstantial thread.
The article linked in my previous post seems to be touting GHB as a "natural drug" of sorts......a substance that exists naturally in the body and that was sold in health food stores up until the 1990's. I don't find it unlikely at all that a pregnant woman might have run across a reference to it as a childbirth aid and decided to look it up. Whatever the case, I don't think it automatically points the finger at anyone.