"Poultices, a potion, and a tonic. Unless you'd rather walk with open wounds all the way to Skyhold where there are surgeons and risk losing a leg." If he continues to balk at everything she has to work with she may very well leave, rules or no. Normally when there's this level of discomfort or distrust there's some manner of alternative to send the patient to but at the moment? She's the best they have and he continues to gripe.

Patience, kindness- no. You know what? No. Do the work and move on. "Drink this. It's a healing tonic, it will alleviate your pain."

A beat.

"It's a mixture of herbal extracts and alcohol. No magic."