Weird problem: whenever I load a save, Yas receives some damage. Then, whenever I touch her Fireflower she also receives damage. As if handling the sword was harmful to her. This isn't the case with her other weapon. When I switch Fireflower from main to off hand and use Ironkiss as attacking command, she is fine.
Furthermore: does anybody know what her swords actually do? There is a vague description that Fireflower is effective against cold based and regenerating creatures but no other info. The +5 versions of swords are supposed to "guard her life" but again - no additional info and no effect granted.