Yeah, it's not like anybody else may have had access to her luggage or anything. I mean, it's an airline flight, the luggage is never handled or anything. [/sarcasm]
O.K. Mr. Gullible, didja read this:
unwittingly used as a courier by organized criminals trying to smuggle the drugs on a connecting flight from Brisbane to Sydney.
FWIW: Brisbane to Sydney is the opposite direction...quite a stretch of you to think she's innocent