There is man next to the gate to the graveyard, go talk to him with rinny and then it will allow you to get thrpugh the gate.
rinny is in the forest iirc you gotta help free her from fairies
Edit: wait I'm dumb LMAO you probs mean where she is in Transylvania, she's at the succubus tower, it took me awhile to figure out how to get there too, I think it's the left when you first enter Transylvania? There's a fake wall you can go through