I've always found the best way to treat Insomnia is to ignore her and eventually she will go away. Once she knows you are intimidated by her, she will never leave.
If any of you have LiveJournal, I can be found there as well as here... although I seem to be spending a lot more time here. I'm using SG to post pictures more than writing anything... so if you want to see what I write about, you can always visit me there (almost every post I write is public).
Aryx' LiveJournal