start by having her pediatrician examine her carefully and order some basic blood tests including a blood sugar. thirst hunger frequent urination and even her behavior could be a sign of juvenile onset diabetes so do not delay. this would be my main concern. if all organic causes of her symptoms are ruled out then efforts can be directed toward her behavioral symptoms.
my daughter is 6. symptoms:thirst hunger urge to use the restroom fear disassociative behavior won't lay down all in pm. my daughter is 6 and has what we consider panic attacks. the first couple times it happened the attacks included blood curdling screams and an obvious fear of something she couldn't speak and was almost dis associative. she knew i was mom but didn't feel comforted by my presence. she didn't want me to hold her but didn't want me to leave. the only way she felt comforted was for me to hold her belly to belly on my lap and almost squeeze her. she also expressed thirst hunger & feeling sick.