You must find out why. Children ALWAYS have a reason for what they do. She must be angry with you, upset about something, and needing to let you know in big way.

Once you find why she is feeling this way, you must validate her feeling, show her that you understand, apologize if needed and heal whatever caused her upset with you. Just know, there is always a valid reason. She is doing the best she can. If you want to learn ways to understand her read, Raising Our Children, Raising Ourselves, or even take a phone session with the author. She is fabulous.