i assume you're talking about the genie, for that you just have to continue the story and do the missions of other characters(particularly nel and violet) and you should be able to get her
like the developer said, you need to defeat a bee, go to willow's end at fairliliy lake(the lake you go to before entering the dwarf city)
though to be honest if you're asking how long it takes to get the genie, well you pretty much have to do almost all story quests since she was added pretty recently