The Central Spinal Canal maintains normal configuration and dimentions. the Thecal sac including the consusmedullaris and the cauda equina appears normal.
The Conus Medullaris terminate at the S1 level with a Filum Terminale being short and thick - Cord tethering.

On the coronal Sequences, ratational scoliosis of the Lumbar spine with its convexity to the left.

Now she is at 9 years and did observer any pain or symptoms. Please suggest how to diagnosis the severity of the cord tethering and when to do operation, if needed.