i'd have a go at both of them and see how it travels...i also second the idea of lavendar oil. let her know that you are putting it there (i do drops on the pillow case) and do a bit of a story mebbe of how it is "happy smells" or something or other and tell her that it will help her feel better when she goes to lie down....or something like that.

far out, i still put a drop of lavender on my pillow case on nights where i am a bit anxious or just not able to sleep! love the stuff!