The 8938 instructions define "presence abroad" like this on page 4:
"Presence abroad. You satisfy the
presence abroad test if you are one of
the following.
A U.S. citizen who has been a bona
fide resident of a foreign country or
countries for an uninterrupted period
that includes an entire tax year.
A U.S. citizen or resident who is
present in a foreign country or countries
at least 330 full days during any period
of 12 consecutive months that ends in
the tax year being reported."
It appears you and your wife are treated the same for determining the threshold. The issue is whether the two of you completed the 330-period which ended in 2016.
