請教! My anut I-94's last day is 02/13/09, but

I booked the ticket for her is 02/19/09 mistakely, now the ticket cannot be changed for no seat available. I called airport immigration office, they said I could take my anut to their office, they would extend several days for her. However, my anut will enter US again in March, is any problem when she re-enters?