With a grateful look in her eyes, Cerise took the handkerchief and pressed it to her nose. She hated soiling something of his like this, but it was needed to (hopefully) stop her nose from bleeding.
She sat there with her head tipped back until Draco returned with the potion, and took it from him with a soft, "Merci." With one hand, she popped the small cork and then tipped her head back, swallowing the potion as swiftly as she could. With a sigh, she lowered her head, and set the bottle down, still holding the handkerchief at her nose as she murmured, "Il devrait commencer à travailler bientôt." And then, because she felt guilty for some inexorable reason, "Désolé à ce." No matter that she'd had no control over it.