My opinion is that this woman is acting out of guilt and fear. She's not secure in herself, her not drinking, etc. No doubt she feels like she could fall back into that pattern with the least little thing. She's just bolstering herself up the wrong way by accusing you and trying to place her own guilt on you. You're right. It's all about HER.
<font color=blue>"Our doubts are traitors and make us lose the good we oft might win by fearing to attempt" --Shakespeare</font color=blue>
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Psalm 119:105 Thy word is a lamp unto my feet, and a light unto my path.