Hi welcome to Health care magic forum.
Thanks for choosing H.C.M.F.
Your daughter aged 8 years had a fracture
,had full leg caste for 10 weeks. Still she is feeing pain, and the leg is deviated to the out side.
I advise you to consult an orthopedic surgeon, for diagnosis and treatment. It is called malunion
, If the fractured ends are in correct apposition no problem of mal position and pain because the pain will be there for about a month. if not in correct apposition it is to be broken again and corrected by plates or a caste.
Wishing for a quick and complete recovery.