It started fairly benignly - lots of pretend games when the cat's mummy died and she had to start looking after the cat. But recently, she's been asking lots of questions about death, and I feel ill-equipped to answer them. Today, she was close to tears, saying "Mummy, I don't want you to die ever unless I can die with you". I really don't know where this is coming from, and can't think of anything that would have set it off. I'm slightly at a loss about how to deal with it - we're not a religious family, so I can't go down that route.