I am actually interested in this as well. Also the bridge to the busted teleport stone appearing in the first forest area at some point along the main quest (maybe also at the end). It doesn't seem to serve any kind of purpose, but it just appears at one point. The only thing that I can tell you is that judging from my dive into the game's files you couldn't have missed a scene. Nothing in the game's CG folder (Graphics/Pictures) has anything to do with her and I haven't found any CGs I haven't seen either. Checking the different towns I also couldn't find her. It's possible I just missed something and there's some more dialogue with her, but most likely the character is from a cut quest the developer forgot to remove.
It seems like the game had a lot of ideas that ended up not becoming reality (random appearing bridge, easter egg cookbooks, harpy and goblin-girl, Veluna's giant empty dungeon, house upgrade, the second time the tea vendor shows up, a few useless NPCs that either change positions or disappear right before the ending), which is unfortunate because parts of it were really promising, and I think with more time, more content, more choices, and more secrets it could definitely be a blast. As is, it's still good, but is mostly just a short dash through a bunch of simple CGs. Of course I don't blame the dev since it seems to have been a money issue, but yeah, I would have liked more.