I checked UESP and found out that there is a problem if you have another quest active that involved the Glenmoril Cave, which I did. It was a quest to retrieve an item. I went and did that, and closed out that quest with the quest giver (not a Companion). I have waited and waited and gone back several times but cannot get anyone to tell me to see Kodlak to start "blood's honor."
I trained with them just to see if it worked and it did so there is some interaction. I tried saving, attacking everyone, then re-loading. I just can't seem to get it to work. Does anyone have any suggestions, or does anyone know if there is a specific amount of time I need to wait? Thanks!