She’s that demon/god leyla I believe
I think she's actually some evil goddess or witch from this world(not from modern world I think)??? And she killed Yvonne when she was a child I think, y'know the part where she got lost in the festival. And then she possessed Yvonne body
She must have a hell of a lot of beef with this kingdom to be doing all this. At least Penelope knows she's not human and from what we get from her coma, she probably saw her memories and real body
Seriously who the fuck is she? She can't be from the modern world... I hope??