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Is walking around the house naked normal or appropriate?
Well, it depends. If your house has a bunch of ant nests well, duh? Walking barefoot is kind of good but sometimes there are pieces of trash or insects you can step in. There are these parasites...
You don't have to do anything about it. She will wear clothing when she is ready to do so. Meanwhile, no harm is done by nudity at home. Nudity in public would be another matter.