She had worked for a refugee-relief project in the most lawless region of South Asia before finding her way into an even more dangerous part of the world--one of great importance for U.S. foreign policy.
She left South Asia because she felt unsafe working there. 
mnli hypothesis: She left South Asia because she felt unsafe working there.  premise: She had worked for a refugee-relief project in the most lawless region of South Asia before finding her way into an even more dangerous part of the world--one of great importance for U.S. foreign policy.