Come help me (2nd book from You're my family)

Four years, almost five, have happened after Abby was taken back to the Director. She is now 19. She's still the same but really difference. That difference is she has become an experiment. Her new name... Experiment 479. Tucker and the Blood Gulch crew and with the help of others are still trying to find her. Tucker refuses to give up but soon the guys start to doubt that they will even find her. But Abby, who had become a mercenary if some sorts, is sent on a mission. But one thing. Her memory was taken and she will not rest until she finds it. But what she finds on this mission is more than she thought.