Dead Silent (1999)

Seeing her parents murdered left her speechless. Now they want to silence her, forever...

Julia Kerbridge is working hard to get her doctorate. Suddenly, she finds herself the guardian of her young niece, Amanda, after the 7-year-old witnesses her parents' murder and is rendered mute. Julia soon discovers that her dead sister and brother-in-law may have held a secret life. Now, she must risk everything as the killers are still hunting Amanda for her parents' secret.