The answer is, 'is it helpful to punters?'. If she might come back and you have her AW link (or other contact), then you might as well write a review. if you are truly certain she wont return, then a review has no value. We don't want to hear your exploits if it does not help us have a good punt (or avoid a bad one).
I'd always say to err on the side of writing a review. Reviews are the lifeblood of this site.