Anonymous wrote:I'd say no, because you didn't actually meet her, don't know why she didn't show up, and have no insight into what kind of caretaker she truly is.
Does she have several reviews? If so, a short factual comment from you might not be a big deal, and some people might find it helpful. But if she has zero or very few reviews, you might destroy her opportunities--and she could be a great person who doesn't deserve that.
Think of it this way...when I'm reading reviews for a product, I want to hear from people who actually used it and liked or disliked it. The people who complain that it got lost in the mail annoy the crap out of me...and they unfairly bring down the overall rating of the product.
I think that the difference here, is that "the product" not showing up, really does ultimately say something about the "product" and its effectiveness. This nanny is unprofessional and I doubt that it is the only aspect in which she behaves this way. OP doesn't know why she didnt show up, but she did attempt to find out. The nanny should have called to cancel, or at the minimum responded to OPs inquiries when things slowed down. The only excuse for this, to me, is if something happened to the nanny herself.