I love Dis sooo much, she's one of those little brain worm characters living rent free in my head. Here are some headcanons that no one asked for, some of them overlap into other members of the line of Durin as well:
Dis was a SPOILT BRAT in Erebor - I have spoken about this before. She has a whole character arc where she grows out of it in the non existant fic that floats around my brain
In a similar vein, she is very much the stereotypical youngest child (I'm a youngest child too lol). She was used to being a princess and hated having to work after the mountain fell. Thorin had to chase after her to get her to do her part and help out
Eventually, she sets up a business selling runestones in Ered Luin
Dis doesn't play any instruments, but she does sing. She and Thorin would often sing together in Ered Luin when their grief over their brother and grandfather threatened to overwhelm them
After Vili died, Dis wove a strand of his hair into her own so that she would always have a reminder of him
This one is controversial - I don't see Dis as a warrior. Non canon and au she would be, but in terms of canon it wouldn't make sense for her to stay at home if she could fight
Instead, I see her as having other strengths: a good head for business, natural intelligence, confidence and charm
She has a serious temper and is unafraid to speak her mind
And lastly, she may not be a warrior but she will fight you if you DARE disrespect her sons
This was fun. Let me know if you want a part two
