Ah he said about the being moved shifts at the beginning which just sounded odd, the detail must have come once he reached those cases chronologically - you don't move someone to the day shift if you suspect they're at best incompetent and at worst a murderer, you move them off the ward and investigate, that's crazy.
She claimed she wasn't present but a text she sent arguably placed her in the room iirc - cell phone location data is not so precise.
It is hard to know if what she does or doesn't remember is significant. I would not expect her to remember a specific time she changed an IV on a specific shift 2 - 3 years previously given that it's the sort of thing she would do multiple times in a shift every shift. We really need to know what questions were being asked - as many have pointed out, there's a big difference between "do you remember searching for X?" and "do you remember searching for X on June 15th?".
Some of the 22 incidents she is charged with causing happened after her shifts, so she was clearly not literally present at all of them. You said 24, were there 2 more she wasn't charged with? But of course if she worked a normal shift pattern, then about half of all incidents that year would have occurred during or in the hours following her being on shift by chance. There were 7 other deaths so that's at least 29 incidents, were there not other non-fatal collapses? It would strain credulity if she was the cause of every bad thing that year, or even every bad thing on her shift - so there certainly must have been more than 24 incidents.
I say much of the non-statistical evidence is tainted in the sense nearly all of it appears to have been gathered long after the fact and gathered after they identified her as the suspect. People aren't just remembering what happened, they're looking for any memories of LL and particularly any of her doing anything odd.