I was appalled when I heard her story about her dog.
I live alone, and have in the past been horrendously lonely and actually suffered from clinical depression (and have tried drinking as a panacea - doesn't work, incidentally. It only heightened everything and made them seem ten times worse). At no time have I even considered giving alcohol to my cat(s) - because I love animals and would never want to hurt them.
I consider myself fairly self-centred (you get that way when you live alone - it sort of comes with the territory), but I'm not self-centered enough to experiment with alcohol or anything else which might harm my animal(s) regardless of how down I might be (and, as I have stated, I suffered from clinical depression).
There is absolutely no excuse for this and I am horrified that anyone who had an animal would even consider such a thing. But then, having said that, I'm not at all surprised. Human beings can be absolutely ghastly (not all of them, of course,) I much prefer animals.
And I have never hurt a human in my entire life either - I abhor violence and would try never put myself in that position. But when making the analogy between humans and animals - animals don't have a choice (because for some unknown reason, despite the many acts of cruelty that are committed toward them, cats and dogs especially can be too trusting). Humans know what alcohol does to them and can make a reasoned decision not to drink - an animal can't.
So yes, it was cruel and thoughtless and there is absolutely no excuse.