Wizard and Spy: Book 1 The Ex-Apprentices
by Julia Group
Lucia's sad life improves after she's apprenticed to a witch. She makes her first friend, Denae, and even gets her first birthday present, a pegasus. All would be well if not for the king telling Denae she can't be a spy, a father determined to bring Lucia home, and that prophecy that she's doomed to commit murder by magic.