Mackenzie has three pets: 2 dogs (Windy and Dusty) and a cat (Luna).
Holds a black belt in Taekwondo.
Los Angeles, California, USA, with her family [June 2012]
Good friends with two-time co-star, child actress Joey King. They filmed The Conjuring together and both provided their voices to characters in The Boxcar Children.
Her favorite scene to film in Breaking Dawn was at the end, when she got to ride a mechanical "Jacob wolf".