...I didn't know that you'd lost your god. I'm sorry.

If you touched an ayakashi and got blighted, it wasn't an emotional problem of your own causing the blight. It's still not ideal, but at least it's easier to deal with permanently.

And everyone feels things like worry and sadness. There's no way to avoid affecting us completely, I don't think, so the important thing when it does happen is to work with your god and clear the air so you can let things go more effectively. If the stinging was a complete accident like that, there's no point feeling guilty about it.