I don't think she will get half of your 401k after 8 years of marriage versus 18 years at the company.
Obviously ask a L, b/c it's crazy not to.
Also if she signed the D papers, why would she now want more of the retirement?
M: 57 H: 60 M: 35 yrs S30,D28,D19 H off to Alaska 2006 Recon 7/07- 8/08 *2016* X = "ALASKA 2.0" GROUND HOG DAY I File D 10/16 OW DIV 2/26/2018 X marries OW 5/2016
