Saga Help Finding a Story

I remember on fanfix there was a story where a woman was either a spy or a bodyguard of leia's or something like that. Can anyone tell me what this story was. All I remember is that Luke was a commander and that at one point the woman had to avert an attack on a transport that Leia on Han were on, she was so good they never knew that anything happened.

You might try here: http://boards.theforce.net/a/b1/14698651