Why do Jing Xuan never come to school today??

Today one of my classmate named Jing Xuan didn't come to school.. I was just wandering what happened to her as yesterday i saw her she was still ok.. Is she sick today?? or maybe she have something going on?? I was confused.. I really care for her.. She sits in front of me and she is always happy..!! I wish Jing Xuan could come tomorrow coz i really want her to come.. !! Wish her good luck..!!