Polar’s Light by Lacey Thorn

A polar bear shifter with no place to call home. Not anymore. Not since the day Fletch’s mother had sent away him and his younger brother to protect them. They’d found a place with the Holloway Den, but does a polar bear really belong in a den of grizzlies? After all these years, Fletch fears it might be time to move on, to build a home of his own.
One moment changed Helen’s life, allowing her to escape the underground cave where she’s been held for years. Locked away from the world. From the sun, the fresh air, the trees. From all the things a bear shifter craves. Unable to shift, weak from hunger and lack of water, she struggles for each step away from her captors. But she won’t give up until she gets help for the other female captives.
One look and Fletch knows what he’s been searching for. Taking in the fragile state of the woman before him, rage fills both man and beast. But one-word screams through his soul, then her lips part and she whispers it aloud. Mate.