Anon, I love getting questions about my OCs, so thanks for asking! There's actually a couple OC-related asks in my inbox, so I'll lead off with this one.
The story goes into more detail about how they meet (while Brightholt is stationed at a remote outpost and Dunaak is just chilling nearby with his clan) as well as the circumstances around it, so I'll leave that for now and answer the rest of your questions.
(Brightholt's family is the group of soldiers and paladins she works with/fights alongside/grew up with)
And here's a handy chart for the rest:















