Nina has spent a large part of her life under the instruction of a master smith, and through his training and practice after leaving him, has become a master herself. A quick note that should be heeded is that Nina specializes in weapons with raw physical ability, meaning weapons that are very powerful and effective without the use of enchantments. Nina is currently the city's head blacksmith.
Range of talents is incredibly wide: For steel metals and below, the sky is more or less the limit on what she is able to create, temper, repair and service, this includes weapons, armors, machinery parts (as long as she has schematics for the more advanced parts), and other objects.
As for more rare metals, Nina has experience enough to forge some less complicated weapon types with mithril, though it is important to note that you will need to supply her with mithril (meaning you'll have to have a GM's approval on the source.)
She does, however, keep enough on hand to cover what's needed for repairs, though you can expect mithril equipment to cost plenty to repair.
As it is, she's not well known yet, so you'll have to have her potential customers do a little digging, though ultimately it is very high quality work at fair price.
Nina rarely keeps an inventory, she works largely on request. But feel free to ask just in case.
Note: Once again, enchanting and magical tempering, for the moment, will need to be done elsewhere. (though Nina will be glad to make the blade-to-be-enchanted :3)
If interested in arranging business between our characters, post here or IM me on Ani Aunerfal.