What should I do when my child who is 5 years old needs a afternoon nap but just refused to do so?

Normally children will skip afternoon nap after 4 years old. Some children will think afternoon nap is a punishment as they have less time to play. It is pretty normal. For me, if she really needs to nap, e.g got late night class, I will inform her she needs to nap a day before so for her to be ready first so to reduce the power struggles.