I think she views it as a sign of starting to get better because you're starting to confront things, even if you're not overly ready to talk about it yet. And in a way... when we start to do that we can all get really scared and want to withdraw from it.

Is there a chance that you were each talking about different kinds of radiators? I'm sure that some, especially really old ones, would be capable of burning. Did they burn to the point of leaving blisters, or just burn so that they hurt?

Hit send too soon: I also think that she does fully believe you. She wouldn't be feeling disgust towards you because she cares about you. She's probably also feeling proud of you for starting to share, and empathy with what you have gone through. Are you feeling ashamed and disgusted with yourself? I get the feeling that you are... so you're putting those feelings on to her, when there is no reason for her to feel that way. I hope I worded that correctly!