How did this employee get away with so much theft?

I work at a place where someone just got fired for theft. It turns out she was stealing in all kinds of ways and one way was that she was refunding money to her credit card on a almost daily basis!!! I just don't understand how she could get away with this for years with out it showing up somewhere on a report. They caught her for something else and found this later but I'm just baffled that the banks or the credit card merchants wouldn't notify someone even if management totally dropped the ball?!?How did this employee get away with so much theft?
Here's the 20 thousand dollar question: Other than being fired, what can she be charged with... Criminal or Civil... And, why didn't accounting catch the error at the end of day reconciliation - its true that there is an over/under count, and typically $4.99 is the daily limit, 3 consecutive is warning, 4 is write up and 5th is a walk notice.





My aunt is a manager for a handful of gas stations in the Texas Area, one of the biggest problems is the hiring of ';people'; displaced due to the floods - taking a job for the day and cleaning out the register along with handing out beer to their bastard family members. And here is the problem, there is very little that the business owner can do. But don't worry, the stations bump up the price of fuel and general merchandise to offset the loss (hence, we all pay for it).





I have no tolerance for pricks like that!How did this employee get away with so much theft?
Have you seen Office Space? If not it was most likely something similar to this. What happens is that if it is a fairly large company and she was not taking large sums of money at once, they probably just didn't notice because it seemed insignificant.