She hears movement in the living room, and either even though or because she knows Severus is still lying on her sofa, she has her wand in her hand before she turns on the lamp and her dressing gown on before she's altogether awake.
Standing in the kitchen seconds later, she stares at him for a long, long moment before deciding her first question should be, "Are you indeed vomiting curdled memories or do I need some Potions lore explained to me?"