I also have double eyelids. It seemed that the swelling had gone down in less than a month. It's been half a year, and there must be something wrong with not reducing the swelling. Let's go to see a professional plastic surgeon. I did it in Zhang Bingjie before. Their hospital specializes in eye plastic surgery. See if your daughter can repair her double eyelids. I hope you can repair it as soon as possible.

I hope I can help you. If you have any questions, just ask!