I agree, once again, with Niara. A halfling inflicted with lycanthropy, is not that out of normal for DnD. Most player characters in campaigns are more special. And compared with our over the top companions, Helia sounds downright normal.
Not saying, I don't like the companions, but there is a lot going on. So having ( to stay with a similar example) a high elf vampire spawn with a demonic ritual above his head, an abuse trauma, that he is working through, a sadistic master, that is hunting him is ok, but we draw the line at a halfling inflicted with something not that unnormal in a fantasy setting?
The voice lines , I heard from Helia, sounded pretty grounded ( plus the voice actress was great).