Agreed, though I'm not sure it led her and others directly to a belief in Christ as much as a belief in God that can lead to Christianity.
And I don't have a problem with that of course. However if one has a conception just in a deistic God for absolute moral values/truths well I think one has to face alot of question begging.
In my darkest days I have never been able to understand being a true atheist. With that said I understand this common moral code to not bring them to Christianity (proof of Christ Lord) but has caused some atheists to come to terms with the existence of God. Again, it is a little beyond my understanding but an atheist can exclude a 'creator'. Big bang theory etc. It seems possible for many to find logical justifications for not believing in God. However, if they come to see a 'moral code' that exists and transends beyond 'cultural moralities' that becomes very difficult to logically explain or justify. So, I don't imagine that leads them to believe in Christ but by God's grace they first accept there must be some type of God responsible for this 'common morality'. If (big if) they accept God's grace and pursue it further it can and has led some to Christianity. Glory be to God.
See I can never become an atheist for a wide variety of reasons, but when I first found Orthodoxy I had to do alot of shedding of my belief on what God is which caused quite a number of doubts, which Orthodoxy was able to answer for me perfectly. My struggles stem from aligning myself to Christ which is a radical change in "lifestyle" for me and just the way in life. But after time it came to the point where I had to stop being dishonest with myself and just start doing it.
These converts who become Christian just because it exemplifies some good morality is pretty weak and shallow IMO. You can't just contemplate it without actually making an example of that morality. I'm not trying to judge here but you have to be transformed by Christ first and forget encapsulating something into a nice little subject called "morality"
However I am very convinced that atheism does reject all morality.