technically this is disqualifying, in practice - if I recall correctly - we have not seen reports anywhere outside of the bogota embassy that has disqualified people for using old photos. We have specifically seen a number of people stating they got approved despite using old and previously submitted photos. Of course, nothing is guaranteed, but if I were you, I would not abandon the case based just on that.
And no, if she is denied for any reason, it will not affect your approval. In the unlikely event she gets denied for an old photo, you woild therefore be able to sponsor her an immigrant visa via F2A.