M.C.
I have learned that when children are scared something has scared them. When where behavior changes something has happend to make that change. My main advice would be don't overlook it. It could be something small like she saw a movie that scared her and made her fearful or it could be something major that caused trama. Talk to her and see if you can think back to when it started and what happend around that time. Be encouraged and I pray you get to feeling better.
M.