As for opening new shells in a screen session, screen has a behavior of opening each subsequent shell in the same directory as the original PWD at the initial start of screen. It's possible that was buggered up. Try exiting screen and starting a new screen session.
Also, is the ecryptfs mount active?
mount | grep ecryptfs
And are her keys properly loaded?
keyctl list @u
As for opening new shells in a screen session, screen has a behavior of opening each subsequent shell in the same directory as the original PWD at the initial start of screen. It's possible that was buggered up. Try exiting screen and starting a new screen session.