In the first time I played a dwarf I also for the first time chose to have Harding embrace the anger of the Titans so one or both of those being true could affect the outcome. Anyway, I got a prompt while talking about the blight. It's something like "I felt the Titan's pain." Mythal feels regret that the blight will cause the Titans pain to be everyone's pain so she deems Rook worthy immediately.

>>3 I had the neve thing happen too, maybe because my rook is from the same faction as her? I did all of bellara quests before I went to talk to her and it never came up

When choosing “We are worthy…” and asked “what is a protector to you?”, I noticed in my different gameplays that: 1. Nerve as protector of Dock Town 2. Bellara defeating Anaris Can short circuit the conversation and have Mythal agree immediately. I can’t tell if it works with other companions depending on their personal quest progression and choices.

If you bring Emmrich & Convince her to help you, he Greatly Approves

If you bring Bellara with you and talk Mythal into helping you, you gain some Bellara approval :)