Consider the question. Dawn Lyn Nervik (born January 11, 1963) is a retired American actress best known for her role as Dodie Douglas during the last three seasons of the long-running family comedy television series My Three Sons. Her brother, Leif Garrett, is a singer.

Answer this question based on the passage: girl who played dodie on my three sons?
What is the step-by-step reasoning process to arrive at the answer: Dawn Lyn Nervik?
This is the relevant information: Dawn Lyn Nervik (born January 11, 1963) is a retired American actress best known for her role as Dodie Douglas during the last three seasons of the long-running family comedy television series My Three Sons.