[HPforGrownups] WSJ & Priori Incantatem Question

[shahara9 at aol.com]

No: HPFGUIDX 3964

This has probably been mentioned before, but I am a newbie on the list, and 
this has puzzled me.  If this spell works as explained, why was Harry's 
father out of the wand before his mothers?  Wasn't the father killed first, 
then he (you-know-who) went after Harry, but had to kill the mother to get to 
him?  I'm sure he killed the father first, then the  mother; so how could the 
father have come out of the wand, telling Harry his mother was coming next if 
the killed ones come out in reverse??

I read all 4 books to my children, and this is one of the continuity 
questions we had.
<< Priori Incantatem: When Dumbledore is explaining this spell, he says 
 that one of the wands will begin to reverse its spell.  >>