Talk to Pediatrician on Right Side Brain Weakness

my daughter having issue in development she was fine but she regressed her milestone we have done all test hb was low i m giving syrup MRI done which is said cerebral atrophy generlaized i took second opninion after physical examination dr said her right side arm nd leg are stiff it means only problm with right side brain i m confused nw wheter the mri report is correct or not . and what should i do for weaknes of right side brain. othet wise she is happy and calm child.