Yes, she was very fragile indeed.
And it is very instructive to look at what the hospital communicated to the parents, as they described it at Thirlwall. This was about 12 hours after her birth, after her desaturations and changes of breathing tube:
Q. So around midday the transfer team tell you that Child K is stabilised and a doctor says to you the transfer is going to happen. What was his expression, what did he say to you?
A. "It's now or never."
Q. What did you take from that?
A. That was one of the first times I suppose that we both had the thought of maybe this isn't as plain sailing as what it was being made out or that we were aware of because we hadn't been told any different at that point. All it was was that she was stable and she was doing okay. We had probably already maybe had the conversation about "It's taking up quite a long time” because they must have got there about 8 o'clock, 8.30 or something like that, so it's now midday, but, yes, that was the first time we had that inkling of maybe this is not where she should be right now.
https://thirlwall.public-inquiry.uk/wp-content/uploads/2024/09/Thirlwall-Inquiry-23-September-2024.pdf, p. 112.
(The mother's account of her child's life and death is beautiful if obviously terribly sad).
The medics at Chester really don't seem to have been good at recognising or communicating how unwell these babies were.