Megan,. That stinks and I'm glad it worked out.
Remember, expect and plan for the worst. Hope for the best. The reality will be somewhere in the middle.
I might suggest that she did recognize you and was as anxietous as you. If, as you say, you are dead to her, then she would treat you as a stranger and either a simple "hi" or ignore you. If you live that close, someday you may pass in a store. Be prepared now with what you will do.
Remember you are not responsible for her emotions. Take the high road and treat her with kindness. It might just drive her nuts.

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