She was probably worked over the last several months.
Should I ask, how?
Interesting if true. Once in awhile, an honest liberal crops up in surprising places. I will be perfectly happy to express the proverbial "newfound respect" if this turns out to be the case.
Constitutional law aside, I live in D.C. and am acquainted with several gay Republicans in local and national political circles. Many of them are pretty conservative on most issues. None of them are flaming liberals (or they would not be hanging around in Republican precincts to begin with). They are generally assimilationist in perspective -- i.e., they are happy with live and let live and mind your own business, as long as they aren't harassed.
I've not tried to poll them on gay marriage, but I have the sense most of them think the issue is unnecessarily polarizing and not a wise investment of time and energy. This is a sensible point of view, IMO.