A memorial service will take place Sunday in honor of the Gallaudet University math professor who died in a fire with her daughter. Laura Snyder-Gardner and her daughter, Mary Ann, were both hard of hearing. The fire that engulfed their home in Falls Church, Virginia took their lives--along with ten family pets. Authorities are investigating the cause. Mary Ann was a junior at the Model Secondary School for the Deaf where Snyder-Gardner helped coach the girls soccer team.