Icefighter. Stormweaver, #4

When your lover helps you escape by betraying you to the enemy.Alissa discovers a secret Resistance outpost in Pangaea's icy northern wastes, while trying to understand why Reith seems to have abandoned her--as well as trying to remind herself that this is so not the time to fall for Janis, the charismatic rebel leader. As she faces a giant snow tiger she suddenly discovers that she can no longer rely on her enhanced abilities for survival in this uncertain new world.
When old friends accuse her of treason, her pledge to defend her home becomes complicated... Icefighter is the fourth book in the Stormweaver series, the far-future fantasy epic from Jay Aspen.