The way the series has been so far I don't think they are going for those sorts of twists. I reckon the husband reacted the way he did, because he was totally freaked out by her returning. Just imagine you have been a widower for 40 years and suddenly your wife reappears and she's unchanged from the day she died. Maybe he thought he had gone mad or something and that's why he set the house on fire with her in and killed himself afterwards. I think she's so blase about it all, because for her it must have been equally horrible to come back and have her husband tie her to a bed and then set her alight (at that point maybe she didn't know that she couldn't die again). Not the sort of thing you'd expect from someone who married you. So now she's just cynical. She can't change anything, as she knows she won't die again and there's no-one there who cares about her. And in regards to her telling tall tales about her death, maybe she just doesn't remember how she died. Neither Simon, Camille or Serge seemed to understand that they had died and had come back. They only found out from others how they had died.