Thank you for your consult at DoctorSpring.com. I have read your question with diligence.
It looks from your details that your relative was operated about 2 months ago.Two months is not a sufficient time for union of bones of leg.If rod had bent then there are chances that it has also affected union of fracture.Please confirm this by your doctor.If rod is only mildly bent & it had not affected the geometry of fracture then there is no need to manipulate.
If you sent me radiograph ,then i will be able to comment more.
With best wishes.