Should I be mad at my aunt?

A couple of months ago my aunt could hardly walk. For a couple of years before that she still had trouble walking. Well, we went to the doctor, and he said its due to her long term drinking. He even said moderate drinking could cause it. So she hasn't drank for a couple of months, and she's been doing physical therapy, and she's been doing great. Well, I went to my therapy appointment today, and was telling my therapist how good things have been going. I just got home, and my aunt is shit faced drunk. I didn't say anything, because you can't reason with a drunk, but I am fuming. She knows that her drinking was causing her walking issues, and she knew it was stressing me out, and she drank anyways. My thoughts are fuck her. But im not sure if I should be angry.

Should I be mad at my aunt?
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