The above observation leads to the deduction that whoever went into the bathroom at that point (after the stabbing of Meredith) must have had to do so to clean him/herself of Meredith’s blood with which he/she was staining the various things he/she touched or leaned against: the door, the light switch, the mat.
And it is probable - not necessary, but probable - that during the following act of scrubbing the hands to remove the blood, he/she left the mixed trace consisting of Meredith’s blood and of cells which had been removed by rubbing during the act of washing.
An entirely probable outcome given the likelihood of the act of scrubbing, yet not a necessary one, since the running water which was used in the shower stall or in the bidet or in the sink, or in several of these sanitary fittings, might well have rinsed away the washed-up blood and the cells which had been lost during this washing.
At this point, one may turn for the resulting evaluations to the trace specimens found in the sink, in the bidet, on the cotton-bud box, traces which tested positive for human blood and which were attributed to Meredith and to Amanda.
[301] While it is not possible to use the genetic scientific data (Dr. Stefanoni explained the impossibility of determining the date, the succession or the simultaneity in the depositing of the components of the mixed trace specimen and the impossibility of attributing the haematological component to one or the other of the contributors), the information previously put forward provides answers which are entirely consistent with the circumstantial evidence that has emerged and which the Court considers convincing.
Amanda was not wounded; in the days following no one spoke of wounds that she might have had; the examination which was carried out on her when measures restricting her personal freedom were taken ruled out the presence of wounds.
Meredith’s situation was the complete opposite.
In relation to this and to the circumstance by which haematological stains attributable to Meredith were found on the inside of the door, on the toilet-seat cover, on the light switch, it should be deduced that the haematological components found in the sink, in the bidet, on the box of cotton buds were also from Meredith.
Nor can it otherwise be argued for the presence of a drop of Amanda’s blood on the tap of the sink.
This consisted of a spot of coagulated blood, with respect to which Amanda explained that it came from her own ear having been pierced; this spot, furthermore, was located towards the inside of the sink: distinct, separate and morphologically different, therefore, from the trace found in the sink itself.
This Court also considers that the components of the mixed trace specimens were deposited simultaneously, and were deposited by Amanda.