I have received a very polite and friendly email from the W this afternoon stating that she is going to receive some state benefit for childcare costs and therefore she's said that I can reduce my payments (which I felt was very fair). This doesn't seem the actions of a WW to me - thoughts ladies and gents?....
My xW can be very rational and thoughtful sometimes and completely irrational at other times. I think it has something to do with the direction of the wind and the alignment of various heavenly bodies. In other words, I wouldn't read much into it.