Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
As you surely recall, Geralt knew Ciri had been in Novigrad, that she had contacted Dudu and me and that afterwards all three of us had plummeted straight into a writhing snake pit of trouble. The last person to have seen Ciri was yours truly, but I, too, had disappeared without a trace. Geralt accurately surmised that Dudu would be the easiest of our ill-fated trio to find. He went to the one person who could help him do this - Priscilla.
