Give her a hobby (art, soccer, coding) and a flaw (jealousy, insecurity, impulsiveness). She should feel like a real friend.
Chapter 8-12 should have a moment of pure vulnerability (a late-night confession, a memory of a dead parent, a fear of failure). This separates your story from shallow romance.
This keyword reveals a powerful demand: readers worldwide, particularly in Spanish-speaking communities, are looking for centered on the emotional awakening, first loves, and complex bonds of young female protagonists.