The answer could be
ESTER
Which I believe would mean that
Your wife has chosen a name for the baby.
For the reason that
The first of these Tuesdays is the
11th tuesday of the year; the second is the25th, and so on resulting in the sequence: $$11 25 26 37 50$$ If you set $$1=A, 2=B,\ldots, 26=Z,\qquad 27=A, 28=B,\ldots$$ this gives the word $$KYZKX$$ which after a $-6$ Caesar shift gives $ESTER$.