For My Wolves by Nikki Clarke

Samiah is used to living on the inside looking out. Along with her sister, she endured years of torment at the hands of her now dead brother, and now that they’ve finally found a place to call home, thanks to her sister mating with a wolf clan chief, she hopes to finally belong.
Except, she doesn’t. Not really.
While her heritage may hold some hints of the shifters she’s come to know and love, the missing pieces leave her feeling as on the outside as before. But hopefully there’s a solution to her incomplete genome, a secret she’s been working on that can finally give her a true connection to her wolf, in its real form. Is it against clan law? Probably. Does she care? No. She’s tired of not being who she truly is.
Now all she has to do is realize her plan while under the watchful eyes of not one but two wolves, both of whom have decided she belongs to them and they’re willing to share, and the gaze of another who would take everything from her.