back ground info

Dr. Martinez is a veterinarian and mother of Max and Ella. She is first introduced in the series in the book Maximum Ride: The Angel Experiment when Max was shot. At this time, Max was forced to heal at Dr. Martinez's house, unaware that Dr. Martinez was her mother. While there, Max reveals to Dr. Martinez that she has wings, and says that it was one of the only times she felt like she had a home and a family.

Max sees Dr. Martinez for the second time in Maximum Ride: Saving the World and Other Extreme Sports, when Max needed help removing a chip stuck in her arm. While there, Fang, a member of the Flock, meets Dr. Martinez while she goes to get the chip removed. He finds a book on birds and another book on DNA combinants, with a picture of Gasman, another Flock member, as a baby wedged between them. Max sees Dr. Martinez again briefly at the end of Maximum Ride: Saving the World and Other Extreme Sports, in which she discovers that Dr. Martinez was her mother, and Jeb her father. Jeb explained that they both 'created' Max for this project, even though they both had no personal connection. After Max was created, she was to leave the project, not by Jeb but by the other scientists, who were under the impression her motherly instincts might get in the way of her job.

In Maximum Ride: The Final Warning, Dr. Martinez is at the first meeting with the flock and the government, and she introduces the Flock to Dr. Brigid Dwyer. The last time she is seen is at the ribbon cutting for the new school intended for The Flock

from www.wikipedia.com