The thing is, you've provided an honest report in UKP, which is the prime place to leave honest reviews.
If its your first punt and you give her negative feedback on AW it may affect your profile if she says something unkind about you in return (and she sounds a bit mean, even if she did perform as advertised).
My own opinion, is it's not a punt I give a positive rating too unless I went away very happy - its expensive after all - and it was poor show not to give you a warning at least. I'd even argue it's her job to ensure you have a wonderful and satisfying experience in the time allotted, not your job to keep an eye on the time like it's a parking meter.
If you give positive feedback on AW then you risk your credibility with other punters that she leaves unsatisfied. Not a big deal if you have a different name in there to your UKP name, but it's good to start as you mean to go on. We are your fellow customers and honesty between punters is important (you expect it from us, after all).
Also, if it's your first punt, you don't have much to compare yet, so maybe good to hold off on saying positive or negative (positive / negative compared to what??)
So the other option is don't give feedback on AW on this occasion. She will either leave you good feedback or say nothing. You are the customer - you are not obliged, whether out of courtesy or otherwise.
Think of the hundreds of things you buy online or in shops every week - every seller would love you to write on their website and broadcast to everyone that you are a "satisfied customer." It's their free marketing after all. But it is time consuming and there's not much in it for you. If the service was truly remarkable or truly awful you light be tempted, but not for every tyre change or use of a garage . . . .