Seems like there is embedded merit / preferential packaging in these schools’ financial aid. Under such conditions, it is really hard to guess if there is any chance (and, if so, how much of a chance) that she will get the added financial aid. Public data on merit scholarships is not as helpful as that on admission, and embedded merit / preferential packaging of financial aid is even more opaque.
What may be relevant is how close each school’s NPC is to your affordability limit (your AFC, which may not necessarily be your EFC, plus whatever she can contribute with federal direct loans and work earnings) and how she compares with the typical admit class. If the gap is not that large and the school is a low match for admission only, that may be a more likely chance at the added financial aid than if the gap is large and/or the school is a high match or reach for admission.
Georgia Tech does offer a few competitive full ride merit scholarships, but these should be considered super-reach (12,000 GT early action applicants → 300 semifinalists → video interview → 100 finalists → on-campus interview → 40 scholarships).
http://www.psp.gatech.edu/application-selection
http://www.psp.gatech.edu/faq