JBO wrote:
"hey, you went to X high school didn't you? Kathleen, right?"
It's too bad you didn't say this... it's simple and friendly enough that if you were wrong you could drop it from there without much fear of verbal assault from her - and could lead to a nice conversation if you were right.
[shrug] Don't beat yourself up about it... though I know EXACTLY how you feel about botching a good opportunity or two... or ten...
Keep shopping there... same time... maybe a couple items each time for the excuse to be there and maybe she'll turn up again?
Hang in there... most of us have been in that boat before!