WICHITA, Kan. (KAKE) - For Karina Valtierra, working with children is more than just a job—it’s her purpose. “I want to make a difference in those kids’ lives,” she said. Valtierra is a teacher and early childhood development specialist who mentors children facing challenges—many younger than she was when her family moved to the United States. “I moved here in 2001, went to high school, graduated, got married, had my first two kids, and then started college,” she said.