The specifics about how blessings and the such worked would probably be better explained by the angel in question who provided them. That kind of thing was subtle, and required some help from the person receiving the blessing for full effectiveness. Simon and Richard's presence probably weren't helping matters at all in the restful sleep department, even if Simon wasn't actively trying to make things worse for her.

Simon just shook his head, actually for a moment looking briefly distraught at the very idea of Alex asking that entity to do anything for him. He'd really just rather stay out of view and avoid him entirely. He soon went back to that usual intense stare because it was back to Simon explaining things in strange metaphors time. "Before, his door was open just a crack. Just enough to peek through. That... Murmur is like the sun itself passing by. Now that Richard has seen that for himself, it opened the door for him. Once the door's been opened there is no closing it."

He's used door metaphors before, when talking about bilocating, and when telling her about what happened to him. For Simon his door was opened by his parents and whatever demon they called up for him to serve.