For the record I believe -
she's not innocent - however I'll offer up what I believe is reasonable doubt about evidence that was presented during the trial -
The ME testifies to her findings that the duct tape was placed on the face
before decomposition. This finding goes along with the prosecutions theory of it being used as a murder weapon.
Dr. Spitz testifies that he believes the duct tape was placed there
after.
Two "experts" - two different conclusions. At this point I would imagine the jury would use their own common sense, life experiences, etc to come to a reasonable idea of what that conflicting testimony means to them.
If I were to do that I would have a hard time believing that the duct tape could continue to be sticky enough to stay on the body throughout decomposition but not sticky enough to contain any evidence of who put it there.
It would have been exposed to many things throughout the decomposition process

as well as the elements for close to 6 months and that may have well destroyed the evidence, but I believe it would have also destroyed the stickiness.
In this trial that would mean I came up with reasonable doubt as to whether the duct tape was the murder weapon.