IMO, this sounds like a decision that can be based on the cost of law school. If she is not interested in the more-competitive jobs (BigFirm, etc...), location of school is less significant. JAG Corp. is going to put you where they want you, so I couldn't imagine much of a difference as far as they are concerned.
Also, she can spend her summers interning in the local DA's office in WA, which should give a sufficient connection to lead to some job opportunities.
If I were her, I would figure out the actual cost (after $) of each school, including living expenses. She should also consider borrowing whatever money she needs, because many of the types of jobs she is interested in will offer loan repayment assistance--which makes her education even cheaper. So long as she sticks to the federal loans, she can get the money at a low interest rate and qualify for a consolidation that would result in a low monthly payment.