User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-25044414-20121007062341/@comment-112.207.55.234-20121007151750

I think annabeth is oing to stay in Tartarus remember that mars and juno warned him of a hard sacrifice he couldnt do? it mus be when annabeth decided she will close the door by herself but percy refused since she will die.

Just a Theory though but i can be wrong, still im a little worried.