Jeff Farrey was deployed from Sept 11 (pretty much right after they got married) til sometime in July 2012 (between 13th-26th I believe) which him coming back goes with when all of her child abandonment charges happened. I'm guessing that she either didn't say anything about being an army wife or they didn't bother to call him home because he was already so close to coming home.
He also had at the least a field training in May of this year, & his unit went to California to prepare for deployment in late Sept-late Oct, scary to wonder what happened during that time.
But, the area that they buried the body is either on military land or really close, & digging in the dirt isn't easy, so I wouldn't doubt that he helped bury the body. Orogrande isn't really close to Transmountain, although she may have also remembered passing through Orogrande on her way to Elephant Butte & that its pretty desolate. Chapparal, NM is also in between El Paso & Orogrande, & pretty close to their apartment on Dyer St, probably about 30 minutes from their house on Cerro Negro. Its interesting to me that they moved to that house, most military prefers to live on the other side of the mountain to be closer to the base & its cheaper.
I don't get if she really worked or not, I've never heard of a "Mechanic Driver" & if she wasn't working or going to school the kids couldn't go to daycare on base, but there's so many other daycares in town.