Spitz is involved in a case now, where he is stepping over his area of expertise and arguing digestion times. I will tell you this, it is almost an impossible area to draw a time line, digestion varies in each individual given the same meal on a daily basis, digestion is complicated by factors such as illness and stress, extreme stress will shut off the pyloris and in effect stop the process. If for example, as you believe ,this child suffered a severe head wound and was kept alive for the time it took to construct a staging (not sure if this is where you are going) there would have most likely ,most probably, no digestion taking place after that point.
Food, such as crab in sauce is a fatty meal, the sauce alone is almost 90% fat, of course the crab itself is lower in fat content, a fatty meal by most estimations will slop around in a stomach for about four hours, if it wasn't there, and she ate it around seven or so, where is it, that is my question, where is it? You suggest she ate it at six, (she didn't get there until about six did she?)this would normally suggest the meal was leaving the stomach and entering the small intestine around 10, if for some reason she digested more quickly the meal would still be in that small intestine for several more hours. Instead, there was pineapple in that intestine. It would be very safe to consider the pineapple being in her stomach until nine if she ate it at five before leaving the house, and safer still to agree it would be in her small intestines from nine until the time of death. I agree with you on this, the head injury, or the stress of the violent acts perpetrated on this child, either could have made her throw up.
IMO The ransom note is THE important piece of evidence, it is telling who the perpetrator was. It was a person who knew how much John Ramsey received for his bonus, it was a person who had some contact however minimal with Mr.Ramsey, it seems unlikely a stranger. Patsy is creative, I'll give her that, but she is not savvy enough to not ask for a million or more for her child. That bonus amount is a "dig" , a "dig" to indicate they knew the fatcat had gotten a big present and wasn't sharing. They felt cheated in some way.
Emotions rise at Christmas, people who feel left out feel it more at the holidays, people who can't make ends meet get angry at those that they believe could have made it better for them. We do not know who among their aquaintances could have felt this, we do know Santa worked for free that night, did he expect a "bonus", we do know that LHP begged for a loan, did her family think she was "due" this amount? We don't know of others who may have felt slighted, we don't know if there were families in the Ramseys' employment who struggled through the holidays while knowing the Ramseys were enjoying a more than opulent lifestyle and unlike many rich , they were not sharing.