urine stains in the basement

Those urine stains in the basement outside the wine cellar came from Jonbenet, right? So those stains mean that Jonbenet lost her consciousness in the basement and not in her bedroom or the kitchen. And not in her bathroom or any other bathroom. So the basement was the last place that Jonbenet set foot alive. If Patsy is the person who killed JB in the basement, what was Jonbenet doing there with her mother? It just doesn't make any sense. If it was an accidental murder over bedwetting like many assume then those stains should have been found in JB's bedroom or her bathroom.

The headblow couldn't have happened anywhere else in the house but in the basement, where the stains were found, because moving an unconscious person around the house and carrying them for example downstairs, to the basement, will cause them to release urine. Mechanics. So before reaching the basement (unconscious in the arms of Patsy ) JB should have emptied her bludder in other parts of the house. All in all, the combination PDI and basement stains doesn't make sense at all. The combination BDI (or even JDI which i doubt) JB's urine in the basement does though.

Edit: Do you think it's the strangulation that caused Jonbenet to release that significant amount of urine and not the headblow? Then why did they (the person who caused the strangulation) strangle the child outside the wine cellar and not inside where the tools were found?