We can't say whether any evidence proves her guilt. As that's up to the jury to decide. However as well as LL being present/involved in each case, the prosecution are highlighting patterns. One pattern has been that the collapses seem to happen just after either the babies desgnated nurse leaves for a break etc, or when parents that have been with their baby on the ward leave, to do things like get food or get some sleep.
So, in addition to any medical evidence we hear, for this case we've also heard that on the 3rd June, the baby collapsed 5 minutes after the designated nurse went on their break at 1am. On 15th June, the first collapse happened before the parents were on the ward, but the collapse around 3pm happened when the parents had left to get food, and the collapse around 7.40pm happened when they left as the mother felt unwell.
The blood around the mouth and alleged throat injury is also very similar to what we heard for Baby E.
all IMO
ETA re milk allergy. There's no evidence that Baby N had any other problems with milk, or that they stopped milk before he recovered, so milk allergy doesn't really fit
edited- to clarify it was 1am on the 3rd June, on the 2nd/3rd June night shift