 [ Symptoms ] my 17 year year old daughter was diagnosed with leg length discrepancy [ Disease ] well through out the years your daughters muscles and ligaments have adapted to the discripancy so u can not really expect them to readjust that easly if you can find a good physical therapist he can help your daughter readjust to the correct posture after the lift would take about 12 sessions maximum 1 monthhope i have helped good luck