Could it be possible she was swiped in by another colleague? Or the Door was held open for her by another member of hospital staff? and/or the pass was already at work? (in her Morrison bag of secrets).
We know she didn’t forget it as it was swiped after 7pm. Just speculating I think LL likely premeditated her attacks. Wonder if her text to her colleague to say she was leaving for her shift was to give herself an alibi?
I think she is very clever covering her tracks hence why LL is placed at the scene every time and there is evidence to prove this yet there is always a little grey area of doubt with each baby where she has tried to cover her attacks. Lucy says herself “they will have little or no evidence”.
I wonder if she intentionally/frequently uses colleagues swipe cards to gain entry?
Then using her own swipe card after harming the babies. Just to ensure if she was caught they couldn’t blame her as she wasn’t on shift, I’ve noticed a pattern of her where abouts being constantly questioned throughout this trial and I believe it is intentional.
In the hospital I used to work in, you had to swipe the card in order to get onto any ward. It’s always possible that someone else let her in, however certain wards (particularly NICU, SCBU and PICU) were a lot more secure and had certain sections / rooms within the ward which required you to swipe your card in order to access them. The medication rooms had card access too, although some of the older wards had a pin code you had to put in on the door in order to access them.
I think it massively depends on what sort of set up the ward had really, but in my experience the baby wards tend to be small and compact (as the one she worked at looks from the pictures) with only a few members of staff working and as other posters have said, I think it’d be difficult to turn up and not be instantly noticed. The staff tend to be pretty vigilant as well, I’d often get grilled by nurses demanding to know who I was, what I was doing there, how long I was going to be etc. as soon as I set foot on the ward lol.
The timing discrepancies are something which I’m very intrigued by too though.