A couple of comments from a female friend still resonate:
. . .
"Does her behavior seem out of character?" [No.]
I should clarify. My advice about whether-or-not to validate is coming ENTIRELY from this ^^^, and djh's response to me upthread about whether or not he even wanted to fix this anymore, and whether he felt this was a woman of quality or not.
If she were acting momentarily WAY out of character for herself (as my own wife was, for instance), my advice about validation would probably change entirely.
Although I'd still recommend the "24-hour Rule," true.