Five miles away from where you are currently livin, then it becomes a secluded area deep in the woods, rumors abound that the U.S. Army has a hidden research base where they are experimenting new weapons for espionage and combat, and said ‘weapons’ are rumored to be monster girls. You are discussing it on an Internet forum when you hear wings flapping and then a thud of someone falling. Coming out to investigate, you were greeted by a [insert mamono of choice here], grievously wounded.
“Please hide me…even just for this night. I’ll reward you anything in return.” She promised amidst groans of pain.
…
Much of the time passed, two MIB-esque agents accompanied by fully-armed soldiers, some APCs and helicopters has arrived and visited you.
“Sir/ma’am, have you seen a woman that pass by here?” one agent asked. The other agent shows a photo of the lilim, but her monster physical traits are cropped out, making her human in picture. The agent added “She is a dangerous person and lives of many depend on your cooperation if you have knowledge that will be crucial for her capture.”
What have you done and what will you answer to the agents?