Some become trappers because they just can't stand civilization, or civilization can't stand them. Some because they are hiding from something. And some because they'd just rather be there than anywhere else. Hammas falls into the last group, and perhaps, if we're being completely honest, a bit of the first as well. The River Kingdoms are about as accepting as an area can be, but that doesn't mean the people don't share a preference for those with white, or at least non-green, skin over the more olive flavored.
This became more apparent as childhood turned to adolescence. Not that those around her were cruel, but children will play with the girl who can find the ripest berries and men will drink with the hunter who can follow a wounded deer on a moonless night, but suitors don't bring flowers to the girl who's green, and that hurts.
And so, Hammas drifted more into the company of those wild men and women who roam the dark forests and wild moors. Her talents made it easy. Hunting brought in meat and money, both of which are always needed in river families, large half-orc ones especially, and earned respect from everyone, though no offers to join at the Rose's alter.
Ah, you're right, her family. Yes, that is important. As said, the River Kingdoms are a rather accepting place, in their own way. If you can hold on to it, then it's obviously yours. If you can't, and don't have friends to help you, then it obviously isn't. That's the sixth river freedom. As such, a lot of half-orcs, and other misfits, come on barges from Ustalav, Mendev and the Inner Sea. And that, is how the story of Hamma began.
Two half-orcs met and, like what happens to most of us, decided that they rather enjoyed one another's company and enjoyed it enough to not kill each other or the squalling brats when they inevitably came along. Being in a village that, like most villages, followed Erastil and put great stock in such things as 'commitment' and 'tradition' the two got married. More children came, and more children, and some how a few more snuck in, which Hammas' father is firmly, or at least loudly, convinced that someone simply dropped off and forget to return for, surely he wasn't responsible for all of these. To which her mother would loudly reply that yes he was and had he forgotten how it came about. Ah well then, perhaps you could remind me how its done, and, inevitably, soon after another child would sneak, or rather come lustily wailing, into the house.
In a crowded, noisy environment like that a middle child has two options for getting by, get louder or be quiet. Hammas went quiet. Since others had first call on attention, she learned how to solve problems herself. When someone was looking for a target to harass, Hammas just wasn't around.
Time in the wilds, with the chance and need for careful consideration that trapping provides, strengthened this tendency. In group conversations, she tends to hold back. Waiting until everyone else has finished. One on one, she can become quite chatty. Willing to listen for hours and share stories about the things she sees. In general though, Hammas is most comfortable expressing her feelings through action, which she doesn't hesitate to do. A firm handshake, a warm hug, or light punch to the arm.