The question gets a faintly crooked smile. "I don't plan to engage them directly. And if they turn out to be more troublesome than I expect, I can get away more quickly on my own."

She pauses. "If any get past me, the charm should keep you hidden -- but if you have the slightest worry that it isn't holding, take off. Drive and keep driving. If that happens, or if six hours go by and I haven't returned here ..."

One hand comes up, and plucks a hair from her head, and holds it out to Matt. "Burn this and speak my name, and I'll find you."