That quote needs more context

‘You did not appreciate the comments made by Mr Cooper and one person’s banter may be insulting to other people but that did not justify what you then went on to do.

‘You were seen to be approaching him, throwing your drink over him and then striking him deliberately in the face with the glass that you had. Your conduct was incomprehensible.

‘The only explanation that can really be put forward is that you were under the influence of drink, which does you no credit.

‘It was no doubt traumatic for Mr Cooper and it would have had an impact on him. Fortunately he seems to have made a good recovery.

The judge didn't give her a righteous female rage pass, he/she gave her an "upstanding mother" pass.