How should a mom respond when her girl shows a desire to be spanked in a story?

Just listen attentively and show your genuine interest. Say something like, 'That sounds really interesting' or 'I'm here to listen.'

The daughter should firmly say no. She has the right to set her own boundaries and should make it clear that this is not appropriate talk.

Share more about the topic of the story if you feel like it. Maybe add some interesting details that you didn't include before. You could also be a bit humorous in your response to make the conversation more fun and engaging. For instance, if she commented on your pet in the story, you could tell a funny anecdote about your pet.

Just say 'Thank you, I'm glad you enjoyed it!' That's a simple and nice way to go.

You could start by showing empathy and saying something like, 'I'm so sorry you're going through this.'

Ask her a question related to the snap. If she posted a snap about a book she's reading, you could say 'That book looks interesting. What do you like about it so far?'. This shows that you're interested in what she shared.

You could start by simply reacting to the story. Send a like or a short, friendly comment to show that you've seen it and are interested.

The mom could set clear boundaries. She can explain to her son that she will be happy to share stories at certain times, like during bedtime or when they have some quiet time together. And that forcing her is not going to make it happen any faster. If the son continues to be forceful, she might need to give him a time - out or some form of mild punishment to teach him about respect.

Just reply casually. For example, say something like 'Haha, glad you liked it!'

This is a very inappropriate and uncomfortable situation. You should firmly tell your mom that such topics are not suitable for discussion. For example, you could say, 'Mom, this is a private and inappropriate topic, we should not talk about it.'