Defender Cave Bear by Zoe Chant

Two damaged people. One deadly enemy. And a pair of hell-raising flying kittens….
Tirzah hacked into a shady agency’s computers to get proof of their evil deeds…and uncovered a secret so wild it can’t possibly be real.
Shapeshifting supersoldiers on the run from their creators? A lab studying captive mythical creatures? It has to be some bored employee’s fantasy novel. Right?

Then the flying kitten turns up. And the assassins. And the gargoyles.
But just because Tirzah uses a wheelchair doesn’t mean she’s helpless. Okay, so some secret organization is gunning for her? She’s going to gun right back… and she knows exactly who can help her. If she can track him down…
Pete was once a Recon Marine. That was before he was abducted and turned into a monster. Now he’s escaped his prison… but in his heart, he’s still in chains.

It’s not just his ferocious cave bear he has to hide. For the safety of everyone – his team of misfit shifters, his family, and especially his thirteen-year-old daughter – no one can discover what his captors did to him.
He can’t let himself get close to anyone. Until the most gorgeous woman he’s ever seen hacks her way through all his defenses, to offer him a job he can’t refuse…