Dear ESB: Should I tell my sister about her venue's sordid past?

here's the story: middle sis is getting married almost exactly a year from now. she's awesome but touchy, to put it mildly, and is extremely sensitive to drama between family members: she hates our stepmother for something that went down with our mom six years ago, for example, and our stepmother isn't invited to the wedding. a number of aunts and uncles won't be there, either, thanks to other dramas (and to the fact that sis and her fiance are paying for the wedding themselves, and it's going to be fairly intimate).

sis isn't especially wedding-y, and i thought it would take a while for her to settle on details. not so! she and fiance have already found a venue they both love and have locked in a date. here's the thing, though: unbeknownst to either of them, said venue is a former convent at which our mean aunt the former nun was cloistered. (she was kicked out of the order, which is...another story.) ANOTHER of our aunts ran away from home as a teenager and stayed at that same convent for a little while.

i find those details creepy and kind of cool, but i can imagine a sensitive someone planning to get married there could feel differently; wedlock cranks up superstition for some people. do i tell sis about her venue's past? if so, when?

*****

Tell her. NOW.

Otherwise some drunk uncle who is invited to the wedding will leak the story at the reception. (Or she'll find out ten years later, which would be even worse.)

Image via Life in Lomo