Brenda's Unicorn (New York Unicorn Book 1)

When eleven-year-old Brenda Collins discovers a unicorn hiding in her backyard, her ordinary life shatters into a thousand magical pieces. She's the only one who can see the majestic creature, and suddenly, she's thrust into an unbelievable world where ancient magic pulses just beneath the surface of New York City. Brenda, Charles, and a unicorn named Sparkle have all kinds of adventures together.