I think I’d go “flat”. Either that or sarcastic - these are my, admittedly unhelpful, instincts when I’m being accused of something.
I don’t think her flatness helped but not did it condemns her imo. Other things did though.
They didn’t call any medical experts - apparently they had one but he was binned off at LL instructions. They just had the maintenance man who came about the sink. Nobody challenged the medical evidence at all.
They didn’t challenge the famous “chart” that showed her on shift. I don’t understand it myself but lots of people claim it’s a statistical nonsense.
They didn’t challenge the insulin assay test - just admitted that the insulin babies had been deliberately harmed and she was the only one around for both incidents.
They didn’t challenge the mysterious rash on the air injected babies. The author of the paper the prosecution used has said his findings have been misinterpreted. Did nobody for the defence think to ask him?
They didn’t mention any incidents where babies had adverse events or deaths when she wasn’t there. There are lots of vague claims that these were excluded because they didn’t fit the narrative but why didn’t the defence use that if it’s true. Surely the defence would be allowed the patient notes that the police had access to.
The prosecution used an X-Ray taken on a baby that LL had never seen at the time it was taken - she hadn’t been at work. Why didn’t they point that out?
She claimed she wasn’t having a relationship with the married doctor despite going on shopping trips etc and having him over to her house. Married men don’t go on shopping trips to London with female colleagues as a general rule. Maybe it was all completely innocent but she shouldn’t have wept and hand wringed about it. It made her look like a liar. “I quite fancied him but he was married and it didn’t go anywhere” or “we had a connection but it was more me than him” or “we had an affair for several months” would have sounded more honest. She pretended she didn’t know what “go commando” meant when one of her friends used it about her when she said he had asked her to do something. Almost everyone of her age, sex, and background would know and it was obvious from the message that she knew. She lied on the stand in a murder trial over something so trivial so of course it’s hard to believe she’s telling the truth about anything.
All the talk about her mysterious childhood illness, her not being able to sit in the back of a normal car because of her knee and not being able to walk from the dock to the witness box because of her mental health made her look like she had munchausen’s. Not the image you want when defending yourself from Munchausen’s by proxy.