It seems that she has become hardened due to harsh experiences. It doesn't show that she has a weakness of spirit, because the excerpt does not allude to her being weak at all, quite the opposite actually. It's not carelessness either, it doesn't say that she's reckless in any way and gives no examples of this either. I don't think she desires revenge, at least not from what I've read from this short text. The key word: Insensibility. It means she is unfeeling, stoic. Usually, if someone desires revenge, they <em>feel </em>anger, resentment, venomous, but it sounds like Hester is just numb to the world. Stay cool.<3
