No, I didn't realize it was the Open House for your home. For some odd reason I was thinking maybe you were a high school teacher or something like that (some type of private school)... but then this is definitely the wrong time of year for that so it did seem a bit strange to me...
Allowing her to initiate contact is good. And being friendly without being pursuing is your best bet.
Your response on the oil, that sounds positive and friendly without being over- friendly or pursuing (which is deadly! Pursuit and anger are the best way to kill off potential). Although I wouldn't always share with her what I'm doing (i.e. helping at another store). Being real happy and real busy are a great way to make a spouse wonder, and wonder is a great spark for making them think about you.
Keep in mind, I used the word potential. Never expect more.
BTW, write this little reminder down somewhere where you can remind yourself every single day: "Do the words bring us closer or push us further away? If they push you further away DON'T USE THEM!!!!"
There is no arriving, ever. It is all a continual becoming.
