A very minor suggestion:
Shadow Dancing is a supernatural effect and presently there is little indication of that to anyone that can detect a shadow dancer when they use HiPs.
My suggestion is simple: apply a shadow shield VFX for the round HiPs is used to offer a clear visual indication to people with enough detect that the Shadow Dancer is doing something supernatural.
A more involved suggestion:
Making the summoned shadow appear to be the dancer's model with shadow shield VFX. Using the shadow presently in scenes stretches the imagination.