[Does he really want this story? 'Kunzite is the one who brought me to the Dark Kingdom. When I betrayed him, he would have killed me here. That timeline changed.']

You shouldn't give them too much importance. Besides, we're already away from the forest.

[And then, after a pause that suggests this sort of thing is harder for her to say than telling him the full story would be:]

Thank you for helping in that.