Thanks for the report, I'm looking into it right now!
If you completed Zakira's first quest, then you should be able to start her second quest at Froggy Village.
I believe I found the problem. Basically, since the option to travel to the manor disappears from the map after the quest is completed, I never noticed that the "suspicious request" still appeared in the guild. Clicking the request reactivates the option to travel to the manor, but since you already completed it and you can't obtain another jewel, the game doesn't know what to do.
It should be fixed in the next update, which will be dropping soon.