I'm confused why you left a review to be honest. Your message where you say about your car crash of a meet, and the apology, to me, reads as if your also to blame in some way for the bad punt. I may be wrong, but that's how it is reading to me.
If it were me, and as you said, you felt you owed her some courtesy, and I was also part to blame for a bad punt, well, I probably would have not bothered with writing a negative review, and certainly not apologised to her two weeks in advance!!
Rebecca obviously cares about this to write a response as she has done, which, to be fair, I don't think came across 'cunty' in any way, just facts.
Anyway, that's just my two pence worth, I'm not here to join in the longer debate which will no doubt ensue, but the whole advance apology thing consfuses me. Doesn't make sense to me, unless you expected her to write back to you and offer you a free or discounted second session in return for you not posting a bad review?
Not out to cause arguements and with all respect to you, but, as an outsider to what happened that day, that's how I'm reading it......