It's actually not a Cognizance-related Flaw but a Taboo Flaw. Looking back over it, the herbs option may work better than the folk charms one, though, since that would make more sense around people who might make folk charms.
It's a rough one, but it's a flaw as a Flaw should be. I don't think it's overly nasty.
That was back in this post:
Well, we're partly OK there in that Sophie is more concerned with mediating between Faeries and humans than with worries about primal spirits. However, yes, the Faeries could try to bring her into any such conflict.
Yes, mostly human. Strong Faerie Blood has an impact. At the same time, this is somewhat expected with Faerie Doctor's comments about "the distance the faerie doctor must keep from the rest of humanity to maintain his close connection with the fae" along with Wise One's statement "your presence may cause fear as well as awe or respect." As for entering an Aegis, her Faerie Friend will have essentially the same difficulty most Familiars in traditional ArM5 have.
That would make sense. Sophie is local a Wise One who can and likes to do some healing.