Hermione tugged Delphini to her feet, her hand still covering the girl’s mouth, just in case she found a gout of disobedience. She couldn’t cast a spell at her, not yet, so she flicked a powerful Disillusionment Charm at the blanket on her bed instead, a Silencing Charm, too, then threw it over the child’s head. She shimmered, rather than became completely invisible, but against the darkness of the night it would be enough.