You did not in any way influence her to get that vodka. You might have given her one mighty excuse though. She did not go and have an affair with another man, or do something else to hurt you back, but oh, she went straight to that bottle.
Hey, I divorced my husband, no affairs or infidelity of any kind, and what he does after divorce? Killing himself with alcohol more than ever.
Just trying to say that if they want an excuse, they will find it. There is nothing you can do about it.
But once you do feel like being with someone else, there are some questions to ask yourself and be honest to yourself, and your partner.