Hi
@anxious parent
it is worrying because it is another part of the living with D -- not being in control all the time
it is really important to try and slow down and live in the moment
with this even though the impulse is to want to fix everything immediately.
I would suggest getting the book Pumping Insulin by John Walsh.
my other thought is to increase communication with your daughter's DSN ( diabetic specialist nurse )
some daily conversations for the short term to help with changing basal rates on the pump or possibly she may see things in patterns that may be there.
( by uploading all the blood readings and pump data )