You aren't in a position to recommend she read any book right now, no matter the topic. Sorry.
I have a pretty smart friend/lawyer that told me (I am also in NY) that a separation agreement is an agreement of the two parties. If I was not in agreement then I need not agree to anything and should call him when I agree to the separation.
Of course, my sitch is somewhat different and my H has been different as well.
I know many on the DB board advise you go along, but at this point I am holding my own. I concentrate on me and H hasn't brought it up in quite a while. So, we are Separated without anything legal, just living apart.
Me 45, H 46, S 23, M 26, Together 30, Bomb 6-2-08, S 6-19-08; H left 12-29-08. H home 12-09, Still MLC in 2012! Me- I have my big girl panties on. Bring it.