Yes, she is abusive and she is resorting to far worse behaviour than the reviewers frankly.
Nothing wrong with being pissed off, but, she's the one running the restaurant and serving what customers are paying for. If reviews are bitchin, as pp commented like 'refused to serve' it seems wholly appropriate to challenge that...
...with the truth - not a load of asshole abuse.
Surely you challenge it with, you were refused alcohol out of hours, the same as all our customers, and sold a soft alternative.
Or, the waited over an hour for our meal and weren't even discounted mob.
..you were made very aware that there would be a long wait of half an hour, plus cooking time, which you happily agreed to, ordered, ate and paid for.
We were fair with you..etc.
These responses will show up on their accounts as them being unreasonable dicks.
With this place, she's making herself an unreasonable dick too.
I mean, on what planet is it ok to lock someone in that complains!