It is very important that you maintain your customers well. If you can give your child a gift that he/she likes on his/her birthday, you can bring the two of you closer. As for what gift to give, I personally think that a ten-year-old girl should like some cute plush toys, so giving a big plush toy should be a good idea.
You can also give her some accessories that children like, such as a name necklace or a constellation necklace, which is specially made with the name of the customer's child and belongs to her alone. Not only will the child like such a gift, but his/her parents will also be happy to see it. It is a good gift.
In fact, no matter what you give, as long as you give your child a happy birthday, it will be fine. Nowadays, children are under too much academic pressure. Studying usually takes up most of their time, so you should take this opportunity to celebrate her birthday and let her have fun.