If someone wrongly believes a wife had sex while sleeping, it can cause a great deal of harm to the relationship. There could be false accusations, leading to mistrust and emotional turmoil. It might also damage the wife's reputation unjustly.
Naruto could enlist the help of his friends like Shikamaru. Shikamaru could come up with a really elaborate plan. For example, they could set up a fake mission where Ibiki thinks he's in charge, but it's all just a setup for a series of pranks. They could have actors pretending to be enemy ninjas who act really silly instead of being threatening. And Naruto could keep popping up in unexpected places during this 'mission' to further annoy Ibiki.
It could be related to a strange energy field in the area where she sleeps. For example, if there is an ancient, forgotten ley line running beneath her house, it might be causing this strange phenomenon. Ley lines are often associated with strange and unexplained events in fictional stories.
If the son is old enough, he might check if all the electrical appliances are unplugged to avoid any potential danger from lightning strikes. He would do this in a very quiet way, tiptoeing around the house. He might also look for a book to read quietly in his room until the thunderstorm passes, ensuring his mom stays asleep peacefully.
There could be indie or self - published novels with such a concept. It might be a story that uses this unique idea to explore themes like the unknown within ourselves, the power of the subconscious, or the existence of hidden magical forces. For example, it could be a story where the girl's levitation while sleeping is a sign of her untapped potential that she has to learn to control as she grows in the story.
I'm not sure specifically as there could be many stories with this title. It might be about events or observations that occur while women are in a sleeping state. Maybe it could involve something like the secrets or dreams that are left unguarded while they sleep.