Severus knew the exact moment Hermione allowed herself to sleep. He had to concentrate to do this, and he had to remove his guilt for what she could surely she as a betrayal from his mind.
Determined, he felt her mind begin to open. Slowly, he entered her mind and began seeing her thoughts.
Nothing seemed at amiss at first. Memories seemed to float around him. She dreamt of memories, he realized, feeling as thought he was betraying her.
Get to the nightmare, he willed. He couldn't control her actions or her thoughts, but damn it, he wanted to get this over with.