It depends on whether or not you think it would do more harm than good to see her in person for this. If I remember correctly, she has parts that like to give their opinion and judgements. In that case, I'd give the most distant and expedient notice that you're not returning and why (if you feel you need to explain), but not the leave door open for her to get things off her chest about your life choices.

fwiw, I think you're doing the right thing.