did you check the quest journal? it usually describes what to do next.
- for the witch: talk to talia, talk to eros, buy amulet, trigger event in forest the one 'east' of town) during daytime
- can't help the priestess just yet, it always says 'i'll get back to you'
There's a walkthrough for v0.41 of the game on the web (https://onedrive.live.com/view.aspx?resid=CAD3110D994690DF!5046&ithint=file%2cdo... )