So he is able to instantly find someone?

Niz continues to fly the transport, and then decides to put it on autopilot for a bit. She heads to the back, where the main computer is, and logs in. She goes around for a while, looking over the records on the main computer, till she notices that according to the main base's security detection web she is being followed. Quickly, she uses a transmittor and easily hacks into the other ship's security cameras, and begins to see what is going on...

Note- unless you have a skilled hacker of your own on board, you would not be able to notice this hacking attempt. And, since you never said you have a hacker (and I won't let you invent a crewmember whenever you need one), you don't. Period.

EDIT- @Xion- I keep on not seeing you. But anyway, you can planeswalk to this plane. However, the plane partially isolated itself from others to keep the contamination from spreading too much, so nobody can leave unless they have access to one of the three warpgates, the interspacial and interdimensional portals that are the only things to have enough power to let people leave. Therfore, you would be trapped here to die, as you are not going to be able to reach to warp gate without a ship. Unless, however, magic also gives you the power of being able to fly in space like some corny superhero...

EDITEDIT- clarification edit