Time to Plunder a castle! (Mattahouen)

I approach the castle cautiously, and stop outside a closed gate.

???: "Hey! Over here!" Comes a raspy voice from around the corner. Curious, I step around the corner and see a tall thin man with a chopping block around his neck.

Me: "Skip. What do you want?"

???: "I wouldn't use the main gate if I were you. Take the side path, there."

Me: "Right. Cheers." And I follow his advice, and travel through the hole in the wall, and up a side path, along the walls of the castle.

I spend over an hour wandering the halls and slaughtering the guards pretty easily thanks to my grinding.

As I walk along the path, I hear a feminine voice from a small side room. I poke my head into the room, and see an average height, dark skinned woman standing over a dead knight. She's wearing nothing more than scraps of fur, and holding a pair of axes.

???: "Rest well. You were a fine warrior."

Me: "Hi. You a friend?"

???: "Ah. A tarnished. Hello. Do not mind me, I am simply here to cleanse this castle of its filth."

Me: "I like your outf.... look."

???: "An inappropriate comment. I do not wear this for looks. I wear it because it is functional. Are you here to put Godrick the Grafted into the ground?"

Me: "That sounds familiar. Yeah"

???: "Good. If you should see sit, I, Nepheli Loux, ask you summon me. I'm sure father would permit me aid the fight." And she turns away, signalling the end of the conversation.

I nod and turn away, trek up the road and past the giant, to the boss fog.

"Really? I summon you here? You couldn't have just walked up the road with me?" I mutter to myself and tap the summon sign.