Ehh. A journey can be pretty safe too. Even Mathilde, who was thrown in the deep end, would've been mostly safe if she didn't misread spymaster as master spy and then decided she was the James Bond type of master spy. Eike's journey will probably have something to do with the EIC, and bigger magic isn't the most useful thing there.
I think the best thing for her safety would be to teach her the shadow hose, aka Mathilde's mastery variant of shadow horse. It means she can run away from nearly any fight, and makes her damn near impossible to intercept and ambush (because she doesn't need to stick to roads). Plus, that variant of the spell is probably the single most useful and effective thing Eike could get from her magic in her role as EIC boss (maybe some high level celestial precog could compete, but that's much easier to hire. There's no way to hire the ability to really quickly be where the problem is at any time, or for that matter to cease being where the problem is).
Another really useful tool would be Mathilde's high level of windsight, but it would counting chickens to be sure we can get her there before she becomes a journeymanling.