She pulled out the small leather case and held it out to him.
“It's — it's an emergency healing kit. I give them to all my friends.”
Draco quirked an eyebrow and sighed faintly as he plucked it from her hands; as though accepting it were a favour to her.
“If you're not going to go to a healer, you should at least carry this.” She was speaking quickly, trying to say it all before he cut her off and flung it back in her face. “If you let me teach you a few spells, you'll be able to heal most basic injuries yourself.”
He flipped the case open and scanned the contents. “You realise I can buy most of these.”
Hermione's mouth twitched. She hadn't expected him to be grateful; she'd braced herself that he might not even accept it.
“Then you can easily refill any you use.” Hermione forced herself to step closer and ran her finger along, pointing at the various vials.
“They're all labeled. There's the potion for concussions; any type of blow to the head and you should use a diagnostic to check. Murtlap essence for minor skin abrasions or small bruises. The bruise cream is for deeper and more serious hematomas. The Essence of Dittany is a trump card for most injuries. Unless it's a cursed wound, Dittany can help with most severe external injuries, werewolf bites, splinching. Unless it's the eyes or a brain injury, in which case you'll need to call a specialist. Don't even think about apparating or any other kind of displacement transport if you injure your eyes or have any type of wound that punctures the skull. The pressure will do irreversible damage. This antivenin will counteract venomous bites or stings unless it's a class XXXX type beast or above. The antidote here can counteract the anticoagulant properties of vampire bites.”
Draco snorted faintly.
Hermione continued doggedly. “Calming Draught. Blood replenishing potion. This here is for internal organ damage, kidney contusions and the like. I'll teach you a diagnostic to check for things like that. And this one, it's an analgesic for the acid boil curse. I'm assuming you know the counter-curse. The analgesic will neutralise it completely and it cuts the pain. You'll still need to have all the bones removed carefully and then regrown. But it will reduce the recovery times by several days and decrease the likelihood of nerve damage. And a chocolate bar, for dementors. When you pull the items out of the case they'll assume their proper size. I shrank them so the kit wouldn't be too large to carry.”
Hermione didn't mention that she had expanded Draco's kit far beyond the basics that she gave to everyone else. In the case of her friends she could count on them to come to her if they had an injury. It was not an assumption she could make with Draco. If he wasn't going to trust healers anymore, at least she could equip him enough to deal with more injuries by himself.
Draco snapped the case shut. Hermione stared up at him seriously. “Just — keep it with you. Let me teach you a diagnostic, so you can tell if you're dealing with anything serious.”
“I know how to perform a diagnostic charm, Granger.” His expression was slightly offended.
“Probably not the one I want to teach you. It's a bit unusual. More obscure. Better for war injuries. The basic ones are household charms, for diagnosing fevers or infections and daily injuries. Most medical textbooks will teach a general diagnostic with the assumption that the healer can then narrow their focus progressively. But if you're using a diagnostic, it's probably going to be after a raid or duel. So you can focus on detecting curses and physical injuries, there's no need to look for dragon pox or check whether there's any partial Transfiguration.”
She demonstrated the diagnostic by casting it on herself.
“See? The spell is simple. What's complex is reading it, but we'll just stick to the basics. The colours and locations are indicative. I'm not cursed or injured so the reading is rather boring. The way I tilt my wand can bring various areas into a focused reading. Everything is a healthy sky blue. If it starts turning turquoise, that indicates a dangerous level of blood loss or drop in body temperature. If it's royal blue, that's a fever. It reads from the head down. The brighter the color, the more minor the injury. If it's black, even the slightest trace of black, it's potentially a mortal wound. Red indicates an external injury. Purple is for internal injuries. If there's purple on your head, that indicates a concussion; on your torso that means you should take the potion for internal damage. Lime green would indicate a minor hex but viridian means curses; get to spell damage or call your healer. Yellow is for poison or venom. Fractured bones will show up pale orange, broken and displaced is more pumpkin-toned. If it's a fracture you should heal it yourself. It's an easy spell, I'll teach it to you.”