Hello, I'm glad you liked the touch-sensitivity aspect! I mentioned that fire-attuned Iredicci are traditionally healers, but I probably should have expanded on that more. So yes, fire-attuned have the ability to heal. It's not like one touch, boom, you're healed. It's more like you speed up the natural healing process. So say someone is critically wounded; you can't automagically heal them, but you can start the process and buy them more time till a doctor or medic arrives.
Hope that clarifies it! I'll include it in the codex going forward. :)