When a baby has their needles it gives their immune system a bit of a whack, so any other bugs that are around are more likely to affect them at that time. She probably has just got a wee bug on top of the raised temp from the needles, and it sounds like you are doing everything right.

As I said before though if you are worried about her becoming dehydrated or not being able to get her temp down take her to the emergency room. They would rather see her than not.

T
xx