You can find the level at the top of the map then go back to the middle to talk to Christy
I figured out the bug.
And yes it is a bug in the code. If I have not yet started the Christy quest, and I go into the memory room to play the Christy CG, Christy will appear there in the ship and the quest will break because she no longer appears in the Android port. This also makes Christy unrecruitable.