Wheelchair Woman Exposes Fake Heiress

Scene: Top charity dinner—the highly sought-after pianist's daughter is performing. 
Motive: A woman with a disfigured face and a wheelchair is pushed onto the stage, publicly exposing the glamorous "heiress" on the terrace, who is actually the impostor who stole her life years ago and set fire to burn her alive. 
Visuals: (Don't resemble celebrities, choose characters who don't exist in real life)