It's N-470, not N-472.
As long as she doesn't do anything bad that would make her inadmissible, she can obtain a green card again if you file for her.
However, she probably won't have to lose or surrender it in the first place. Given that you were able to obtain the N-470, your employer almost surely also meets the criteria for her to qualify for expedited citizenship under Section 319(b), which is for spouses of USC who are sent abroad by their (the USC's) employer for at least a year.
With 319(b) she would still have to go to the US to go through the citizenship formalities, but instead of naturalizing at the same time as you, she could get another reentry permit and delay naturalization for another time, and 319(b) would spare her from having to satisfy the usual continuous residence criteria so she wouldn't need the N-470 to preserve continuous residence (although she'd still need the reentry permit to preserve her green card). However, the 319(b) naturalization must be done while you're still working abroad for the same employer.