Word Editor for Character Depth

I have a set of creative-writing drafts in Microsoft Word that need a fresh editorial eye focused almost entirely on character development. The plot is solid, grammar is mostly in place, but the protagonists and supporting cast still feel two-dimensional... (Budget: £250 - £750 GBP, Jobs: Content Creation, Editing, Microsoft Word, Proofreading, Research Writing, Word, Writing, Writing Tutoring)