This question is referring to the ''My favorite Chaperone'' written by Okimoto and it is describing everyday teenage problems.
Mama did give one special bracelet to Maya. She wants her to wear that special bracelet to the dance.
She also insists on one more thing which is that Nurzhan should be Maya's chaperone. It means that she wants Nurzhan to be the person who will look after her and be her accompany.