Illusion and Indemnity. Lexie Carrigan Chronicles, #4

Lexie Carrigan has just arrived at her dream college, and she finds it's not all it's cracked up to be. Faced with having to hide her magic from roommates and new friends, she struggles to find her footing in a new world. Luckily, she's repairing her relationship with Gavon and her sisters--and focused on helping him repair the tear that he made as a boy. But as Lexie navigates her new world, she begins to question what old enemies are up to--and whether Gavon is being entirely truthful about them.
And when an unexpected visitor shows up, she's sure that if she's not already involved, she's going to get sucked into it soon enough. Just as long as her non-magical roommate doesn't find out.