your daughter seems to be suffering from polycystic kidney
you have not mentioned about her age,any High BP
, any family history of kidney disease, exact dimensions of kidney on sonography
, renal function tests if done.
She needs to be tested for renal function tests,urine analysis, and for presence of cysts in other organs.
This may be a herediatery condition or sporadic one.Her abdominal distension and irregular menses can be related to the kidney problem.
You need to consult a Nephrologist