The Stillness in the Air — V.J. Chambers

The electricity went out months ago, all over the east coast. Due to her special powers, Azazel is employed by the government to help keep the peace as civilization crumbles around them. Azazel, Hallam, and Marlena lead a rag tag group on a mission to get west and get help, but there's someone in the way. Jason. He says he still loves Azazel. But she can't ever love him again