Maybe because she left the US so soon after getting the green card, they don't count the short time before leaving the US as having "established residence". How many days (approx.) passed between getting the GC and leaving in August 2002?
PD: Jan 2003 (EB3 rest of world)
I-485 filed: June 2005 Approved: July 2007
I am a layman, not a lawyer. What I write here is not official or professional legal advice. In addition, my answers on this forum are specific to the scenarios discussed in each thread and should not be generalized to other situations.