I am so sorry for you. I would freak.
There are some really good aftermarket alarm systems that disble the motor even if they mess with the stearing column (if the alarm is on the car will self diagnose the point of entry and alert you later and the car will not start, even with a key).
*In the UK they even have stuff that can shoot fire at the thief but I doubt that it is available here.*
Obviously any professional can override this but they would have to know what they were doing.
The best ones cost the most but...
for me the piece of mind was worth it!