The warmth coming from her hand was a soft luxury for Severus Snape, but when he felt her shiver, he found himself letting go, embarrassed by his own weakness. "I'm fine." he said, and sitting up this time, he felt much better, he could make it.
He looked at her, realizing now just how wet she was. "Here... let me..." he took his wand and dried her clothes with a silent spell. "You should get something to cover up... or you'll catch a cold, you've been wet for too long probably..."