I think these are all questions about content within Nostordamus’ (sic) mod.
When the brothel madame introduces you to the sorceress, you then have to visit the sorceress the following day at her house in the magic district; then you’ll start a grind where you visit her once a day to repeat a scene until you get a new scene, then you’ll repeat that scene, and so on, and so on.
The bathhouse is in the same place as the entrance to the brothel, but you won’t know it is there until you hear gossip.
After Felis tells you to go the village you’ll go talk to the purple haired kaugirl and she’ll tell you to talk to the shaman in the other part of the village, which will start a quest chain about lactation,