I thought this was interesting too, in relation to her 2016 diary -
judge's summing up -
Recap: Lucy Letby trial, July 10 - judge's summing up, jury out :
11:42am
"In her 2020 interview, Letby was asked about the diaries. She said she thought she started documenting names amid concerns of the rising number of babies dying."
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From earlier evidence -
Recap: Lucy Letby trial, Monday, April 17 :
1:00pm
"A page from Letby's 2016 diary is shown to the court, with a note on April 8: 'LD [long day] twins'. The following day is
'LD twins resus]. It is followed in a different coloured pen by 'Salsa - Buckley'.
A page of June 20-26 from Letby's diary, has for June 23: '
LD ([name of Child O's initial])'
June 24: '
LD ([name of Child P's initial) A+E'
June 25: '
LD ([name of Child Q's initial)'"
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Mother's evidence -
Recap: Lucy Letby trial, Wednesday, February 15
"...the decision was made for the birth to take place, via c-section, on April 8.
The babies, weighing 3lb each, looked "very nice".
The family were taken to the neonatal unit to see them in room 1 the following day and the family were "happy", and
at that time it was not known what they were going to be called - deciding on the names a week later."
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Judge's summing up for twins L&M -
Recap: Lucy Letby trial, Wednesday, February 15
"Letby said her taking home the notes was an "error" and denied taking them from a confidential waste bin. She added she cared for the twins on subsequent days "quite frequently", during which time there were no adverse incidents."
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It seems to me she didn't know the name of twin M at the time she made the note of his resus in her diary, and it was likely written when it occurred, before he was named.
JMO