Hi,
Well eating a bar of soap could not have been a very tasty treat, but luckily it isn't very toxic. It may cause some diarrhea and she might not feel so good for a little while. But I would not make her throw it up. As long as she didn't swallow it whole she should be ok. If she did swallow it whole, then she could have some problems. It could get lodged somewhere and cause some issues. If she starts vomiting or looking very depressed, then I would take her in for an exam.
Good luck,
Dr. Candy
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