SOLVED
I just had to go down the hole in Roselyn's garden again to activate the fountain warp.
I've spoken to Minerva and completed Evelynn's questline but I haven't got the goddess slice - can't cut vines.
I spoke to Minerva before by interacting with the fountain sparkles but then I started a new game. Somehow it seems to have remembered that I spoke to her and that I did Mary's first chicken hunt. I went straight to the second hunt when I started a new game. Now I have most of my stats maxed out, I really don't wanna restart..
Any ideas??