Paula....
Did you use U-100 syringe in the morning?
When you measured the 1 unit dose in the U100, did you measure 2.5 in the syringe?
Usually when a fur-shot is suspected, it is better to NOT reshoot. You don't know if any insulin did make it into PJ.
Post back when you test her again later. I may not be available....but I am sure Sue or BJ or another ProZinc user will be around.
Better high for a while than low for a moment.