Does UVA screen OOS for secondaries? If yes, because of the OOS competition, then she has a much higher hurdle to climb just to get to the point where they can be told she is claiming VA residency.
Same is true for EVMS and VCU.
I think she needs to amend her AMCAS, but I think there are problems with doing that, and I think that she probably has no legal address in VA she could use.
On top of that without the VA DL, voter reg, car reg, etc., she will not have a very strong case simply because her military husband claims VA for tax domicile. UVA asks for all of these things on their form - you have to provide documentation, copies of stuff, etc. She hasn't said, but it sounds like she doesn't have any of these.
She should call them on Monday and ask - all we can do is speculate. I have been a Virginia resident for almost my entire life, continuously, and EVMS has asked me for even more documentation to prove it - this is a very tough state for establishing residency. UVA and VCU thankfully accepted my documentation without further questions.