Hi,
In my opinion, you should handle this from several fronts:
a) from religious side, there are already plenty of useful suggestions which you can refer to
b) I think you should also take your daughter to see a paediatric psychiatrist. I do not mean your daughter has any problems, but just to rule out this is a psychological issue.
c) I would suggest you install a CCTV in your house, especially one in your daughter's room. From this you can be sure what exactly happens at night and any strange things that can be captured.
This cannot be continued as it will seriously affect the health of you and your daughter.