To date, I'm not as keen on Ilona Andrews' 'Edge' novels as I have been on the Kate Daniels series OR some of their short stories. I still like the general writing style (or I wouldn't be reading), but for one reason or another I find that this series doesn't quite gel. In each case my reasons for not buying into the concept fully have differed slightly (pacing, plot, perspective). The books are generally well-written, but somehow lack balance. Post-Kate I could see this being an issue of partnership writing, where a new balance is being sought. However I've read and enjoyed other things from the Andrews team, and I don't think this is the entire problem. I suspect that, in an effort to distance the new series from Kate, the publishers have demanded a series of connected but self-contained fantasy novels that doesn't really allow for e.g. a more drawn-out courtship between main characters if the action of the novel is such that it doesn't really seem credible to tie everything up in a neat bow at the end of the book.
With 'Fate's Edge', I generally enjoyed the plot, pacing and perspective switches as well as the reappearance of a slightly older Jack and George. Until shortly before the end. When everything felt far too hurried. Kaldar and Audrey could easily have carried a second book... and really needed to in order to resolve both their own and the kids' baggage satisfactorily.