Sounds like she is deep in the bowels of MLC. My wife questioned marriage...linked it to ownership and such (If it was ownership I would have definitely called the maker and demanded a recall at the time).
For future reference....I think you might have gone to far with the contact for the weekend. You spent time poolside, then lunch, and obviously somehow communicated last night with her. I don't think you did it intentionally, but it was probably to much for her. I think going back to your dark place again might be in order. Break your interactions down for the weekend. See how it started OK and then went downhill the more you met up with her. I understand the SIL thing (reason for no 2x4), but it may have been just enough to set her off.
