Welcome to HCM.
You have neither mentioned the age of your daughter nor the problem she is having in the bladder.
In human body we have Gall bladder
and Urinary bladder
. I presume you are referring to urinary bladder. What exactly is her problem - is it bed wetting
at night or retention of urine or urinary tract
Best is to consult a doctor and get an ultrasound
study done and if every thing is normal on ultrasound study and other investigations, then you require reassurance only, that every thing is perfectly alright with your daughter.
Wish you and your daughter all the best.