Millie Davis was 2 in Befriend and Betray when she played the character 'Caitlyn McQuarrie'.
That was over 13 years ago in 2011.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 16, and has starred in 12 movies in total, 11 of those since Befriend and Betray was released.
In Befriend and Betray, I think Millie Davis looks: