Is there any need to document what is technically making this a good deal for you (for legal reasons i.e., she can't accuse you of wilfully squandering financial resources etc)?
Otherwise, maybe just let it be. Although the urge to respond is almost unbearable I would guess.
Me 42 W 39 Married: 11 Jan 1998, T: Since 1992 First Bomb: Sep 2007 Confirmed A/OM: 4 Nov 2007 Kids: D10, S5 Reconciled and together again after (alot of) time and heartbreak. 3rd kid, S, born 2 Jan 2010.