Kiki Kallira breaks a kingdom / Sangu Mandanna.

Enhanced descriptions from Syndetics:

For fans of the Aru Shah and Serpent's Secret series, this action-packed fantasy-adventure sees a girl's drawings of Indian mythology spring to vivid life--including the evil god who seeks to enter the real world and destroy it.

Kiki Kallira has always been a worrier. Did she lock the front door? Is there a terrible reason her mom is late? Recently her anxiety has been getting out of control, but one thing that has always soothed her is drawing. Kiki's sketchbook is full of fanciful doodles of the rich Indian myths and legends her mother has told her over the years.

One day, her sketchbook's calming effect is broken when her mythological characters begin springing to life right out of its pages. Kiki ends up falling into the mystical world she drew, which includes a lot of wonderful discoveries like the band of rebel kids who protect the kingdom, as well as not-so-great ones like the ancient deity bent on total destruction. As the one responsible for creating the evil god, Kiki must overcome her fear and anxiety to save both worlds--the real and the imagined--from his wrath. But how can a girl armed with only a pencil defeat something so powerful?