I don't know if she is working as intended or if this is a bug. All the other fabled minions, when using a fabled familiar, will reduce the 1 hour mission mishap chance to 1%, but she only reduces it to 11%. This has been going on for some time now and I haven't seen it get fixed, nor have I seen it mentioned by anyone else, so figured maybe it's time it got mentioned too, along with all the other overseer bugs. It just didn't seem that important to me in the full scope of things, or I might have mentioned it sooner. I just always end up picking another minion when I see her only reduce the mishap chance to 11%. I really haven't paid attention to the other missions (2.5 hr, 6 hr., 10 hr.) to see if she has the same sort of effect on them.