awww poor girl. Maybe she had a night fright. Make sure you keep one side of the cage uncovered with enough light (night light - distant hallway light) so the birdie can see where it's flying when it has a nightmare / night scare . If sudden sounds are a concern try "white noise " , like low soothing sounds like the sound of rain, the ocean. The dried blood shouldn't hurt her , I would try misting her in a day or two when shes more healed and calm =) She may have bumped her nose and caused it to bleed during the night . Make sure she is eating her pellets / veges if not give her some soaked millet in pediolyte for some extra nutrients since she is healing!