I have. The version I heard was that she has a record of the check he wrote as well as a "get well" card (post-abortion).
Looking online, it seems Walker claimed he would sue the news site that broke the story for defamation. I am very interested to see if he follows up.
Walker's son, who had, as I recall, supported him in online posts in the past, now seems to be turning on him as well. "I don’t care about someone who has a bad past and takes accountability. But how DARE YOU LIE and act as though you’re some “moral, Christian, upright man.” You’ve lived a life of DESTROYING other peoples lives. How dare you. "
It's a little weird to me that someone would keep their financial records for that long (13 years now), but it's not beyond belief, unless we find out, for example, that she normally doesn't keep records and she just happened to keep the thing that would be insanely politically damaging over a decade later.