Should it be the same?

So if you had twin children a boy & a girl and as they got older (15) is it fair to give one more money than the other weekly. My daughter says she deserves more than $100 a week because girls need more things than boys do. I don’t understand my wife and I give our kids pretty much all that they ask for. Shit my parents didn’t do what we do for our kids. And we don’t hear our son complaining. What do you guys& girls think?
Should it be the same?
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