kids and bad dreams

Recently, we've been experiencing a phenomenon which apparently isn't so uncommon to children around Hope's age - bad dreams.  Luckily, Hope is very verbal and is able to tell us exactly what is going on.  From that, we've been able to deduce that her dreams aren't clearly related to anything that she has read or seen (which is both comforting and a little unsettling for me as a parent).  Also, we've thought through things such as "Is she feeling insecure due to lack of routine, change, stress or other things?"  We don't think so.  So, we've just been doing the best we can to talk to her, reassure and comfort her.  She's asked us to play some lullaby-type music at bedtime so that she can think about the words - and I thought that was a great idea.  And she asked us to pray for her and I think it has been helpful for her to feel that big, strong God is watching over and protecting her.  I was wondering, if you have encountered this with your own children - what seemed to help them?