BRENTWOOD, N.H. – A New Hampshire woman has been sentenced to 15 to 30 years in prison after reaching a deal with prosecutors to plead guilty to conspiracy charges in the death of her husband’s ex-wife in 2013. Sarah Desjardins of Epping was accused of being an accomplice to first-degree murder in the death of Amanda “Amy” Warf. The 36-year-old Desjardins appeared in Rockingham Superior Court on Friday.