Hi Chantal,
Thanks for posting your project, and for being so clear about what you're looking for. It sounds very interesting!
I'm happy to edit your prologue free of charge. How else can you tell if I'm the one you want to work with?
Regarding my approach to editing, I'll always track changes, and make clear suggestions using comments, so that your work remains your own. As you said, it's your baby. Also, I'm happy to skype as necessary to discuss the project.
I look forward to hearing from you.
Regards,
Penny