Xbox 360 I can't find Serana anywhere!

[PacMan71]

I was very happy with serana and i fast traveled to the Dawnguard fort.
When it finish loading Serana didn't spawn and the dawnguard attacked.
I can't reload and when i ask for a new follower they says that im with serana so I joined the companions beacuse theres a quest that Farkas must be your follower and it forces to your follower to leave.

Now serana dosen't spawn in her castle.

 

[Medea]

Try to remember the last place you left her and go searching around there. My Serana was a little glitchy following me through the Soul Cairn. I had to constantly stop and go back to where she was to get her to start following me again.

By the way, our pics seem to go together. My pic is the cause and your avatar is the effect! lol