Keeper of the Lost Cities Everblaze (book 3)
Silveny, the alicorn that Sophie found was acting strange. Soon, Sophie found out what was making Silveny act strange (A tracker made of a mineral that ogres mined. ) and went to a great length to protect Silveny. However, Sophie couldn't ignore the disturbing and awakening information (The ogres could be allied with the actual rebels.) and decided to take matters into her own hands. As usual she got caught up in a hot mess. This time her punishment was worst than the rest-her powers got restricted. If anyone tried to unrestrict her power they would get in humongous trouble. Can Sophie get herself out of yet another gigantic mess? You'll find out if you read the book.
I would recommend this book/series to somebody who likes fantasy.