Portrayed Chrissy Seaver on the television series Growing Pains and provided the voice of Gretchen Grundler on the TV animated series Recess. She also voiced the character Elle in the video games The Last of Us and The Last of Us: Left Behind.
She began her career when she was only six years old.
She co-ran a photography company when taking time off acting.
She is the youngest daughter of Nancy and Clifford Johnson. Her brother's name is Chris and her sister is fellow actor Haylie.