Well, here is the feedback from the local dealership:

They found no leaks in the p/s system and didn't see any cause for what happened to my wife while driving the other day.

They did say the throttle body gasket was leaking and that the headgaskets also had a slight leak but didn't recommend fixing...yet. Any product I can add to the system to help the head gaskets along and prolong the agony?

They figured the leak I had noticed was coolant coming from the throttle body gasket, but I'm not sure about that. The area I noticed a leak looked like it was coming from the front of the engine, driver side, near where the p/s pump is located. I'll make sure again when I pick up the vehicle.

 

You can fix the throttle body gasket yourself for $5.
As for the head gaskets, you could try "Steel Seal" or a similar product, but thats up to you.
http://www.roverparts.com/Parts/ERR6623.cfm
http://steelseal.com/