Work Theif!

A couple weeks ago I had lost 20$. I'm really good at losing things. Keys, important papers, anything tiny. I can also be careless with how much I spend. It's only with amounts ranging from 20 to 100$. I'm obsessive about keeping track of large amounts. Im talking money for coffee, cigarettes and whatever to last me before the next paycheck. I didn't think about the missing money again until a couple weeks ago. I was at the mall Christmas shopping. I was also working that day. On my breaks I would go race to a particular store. I was about to pay for something and noticed I was short the cash I needed. I stood there for a moment scratching my head. Okay...this sucks. I need to really start writing shit down from now on. I got back to work. The possibility of someone taking the money then crossed my mind. I made a mental note to not put anymore then 20$ in my wallet when working just in case.
Yesterday Lourie (girl from work) had asked me if i had anything stolen. That was a relief, I knew I wasn't that ditsy. She has had about 200$ stolen from her. We brought it up to Airan(the owner) she had also lost 200$. Catlin(girl from work) had 40$ taken yesterday. We narrowed in down to two people...That was the most surprising part. The evidence points clearly towards one person. This girl embodies everything i hate in people. I think she's the devil