It seems that having a quest from the dragon scholar (I do not know which one I have but the scholar has a blue diamond above their head so I must have one) prevents you from talking to them to continue the 2nd weird sister’s quest where you ask her about where to find things.
I wanted to continue the quest tonight but was stopped because I could not talk to the NPC needed to continue the quest.
The only quest I think might be associated right now is “The Riddle” quest where I have to find both a temple and prayer. I have found the temple (likely years ago) but not the prayer.