This is what I think too having had a similar experience.
What I also discovered in my experience is that it can be harder to defend yourself against a lie than the truth when it comes down to he said/she said. Especially if the other person is higher in the business than you. People defer to the higher authority, and (as one person directly told me) they're harder to replace so they want them to be right.
The reason is that if you are telling the truth, then they know what you are going to say, so can put in measures to make what you say seem the lie. The (honest) person listening to what they say thinking "well what he says must be true because he wouldn't know what they'd say."
One of my examples (one of many) was over photocopying. I had one day a month (consistently the same day) where I did a huge amount of printing on our one printer. It basically tied the printer up all day once I'd set it going. For the rest of the time we did little printing, so it didn't normally matter.
Person T came in and wanted to have a large amount (3000 sheets) of printing for something they were involved in externally. So nothing to do with the business.
I suggested he came back the next day (my day off) and he said he couldn't because he had meetings all day. So I said to him that if he left it on my desk, then I'd pop in first thing on my day off, set the printer going, I'd ask someone to keep replenishing the paper, and he could collect it at the end of the day. He agreed.
When I popped in the next day, there was a note on my desk to say not to worry. I left it there.
On the following Monday when I came in, the note neither was there nor in the bin. I was told by someone who was in that T had come in and picked something off my desk and put it in his pocket.
I got called in by my line manager, and spoken to by at least two members of the SLT because T had been in a meeting with them and said he'd had some things he'd wanted to print, and I'd refused to do it for him.
Now despite my explanations and that all three of them said that they'd never known me refuse to do anything asked, they believed him because:
- They knew he wouldn't ask for printing done for this external organisation because he'd told them on Friday, that he'd taken some stuff to the printers as it wouldn't be fair to ask for that much - even though I had proof he'd done similar amounts in the past.
- He wouldn't have let me come in on my day off because he'd said to them "only on Friday" that it was important that days off were respected - even though I had witnesses that saw me come in, and they knew why I'd come in.
- He was very nice about it and told them that they shouldn't speak to me about it because he was sure I'd just "misunderstood", so there wasn't any reason why he shouldn't have told them.
- I had printed the stuff I'd needed the day before because he'd told them he'd have asked the day before but knew that was the day I did the printing - even though it was in the diary when I did it and at least one of them had seen me printing it.
Despite them all knowing that his story was out of character for me, and there was evidence backing my side, they believed him because he had laid the foundations to make my side of the story less believable - and they didn't see why he would have said these things because "he didn't know what I'd say". The fact was because he knew what the truth was, he did know what I'd say.
And this is what I suspect happened. One of the consultants who was scapegoating her for whatever reason, whether it was to draw attention away from the situation in the ward and their own negligence or they genuinely believed that or some other reason, was able to bring the others to believe him because he got in first with his story - and laid foundations.
It would be quite easy to do. One person saying "really, that was Lucy's baby again wasn't it?" "She's been really unlucky hasn't she." "Didn't expect that baby to die - was it Lucy on duty? Again?", "I'm a bit worried about Lucy. Maybe she'd taking on too much, but her babies don't seem to do as well as I'd expect"...
would go gently into people's conscience and it could very quickly become established that her babies were dying more than the others, then others would comment too - in fact wasn't that what her grievance was about?