This might be a silly question, but how do i leave Cyseal area? Is the wishing well it?

I am done with all quests, but do not see any clear reference to how to get to the white witch.
Thanks!

Well, then you missed the (multiple) "clear references."

Anyway, there's a warp gate called "road to silverglen" or something like that in the North (on the road past the firefields, near the bridge with the troll beyond the church graveyard).

There's an actual bridge there, at the northern boundary of the map, that you have to interact with to load up the next area.

Don't forget to pick up the inert stone from the three corpses just laying before the road to Silverglen.

Thanks!

I meant to say I do not know how to physically get there, i got the portal there and all that and tried clicking on everything, but the bridge.