DIANE A.S. STUCKART, who also writes as ALEXA SMART and ANNA GERARD, is a member of that proud breed, the native Texan. She was born in the West Texas town of Lubbock, home to Buddy Holly, prairie dogs, and Texas Tech University, where her mom once taught. Most of her formative years, however, were spent in Dallas with her parents and siblings: one younger sister and three younger brothers. And then, when she was fifteen, her dad's work took them north of the Red River and into Oklahoma, settling just outside Oklahoma City.