How old is your child? What have you alreay done to address this? Does he/she display other problems? You have options, but I need a bit more information in order to guide you in a sensible direction.
Give her a 15 minute time out and then have her write a note of apology to the child.
Check whether teething might be a source of distress, since your child is still at the age when this can be occurring. Another thing to consider, particularly since the problem has been of brief duration, is posssible viral (or other) illness. Stick with the routine - do not alter it. A systematic routine is the best antidote to sleep problems such as this.