I can't agree with your comment of "just, legal cause". Just because a person's financial situation changes doesn't absolve them of their debt and obligations, life isn't that easy. Seeing that she's under contract for the lease I don't believe there's any legal remedy that would compell the dealership to forgive that obligation.
I hope she can find a sympathetic manager that will help her, even if they don't let her out of the lease maybe they can help her transfer the lease/vehicle to someone else. Even doing that I fear she will be on the hook for some money for early termination.