The cash drawer went missing and she was the prime suspect as she was the last one in the office that night. She was, of course, not the one who took it but rather someone else who came in that night to specifically rob the office. Good thing there were CCTV cameras around to prove her innocence or she would forever be suspected of taking it.
Truth is that she is one of the most trusted employees of the company. That’s why the bosses were skeptical about her involvement in the situation. But she’s really thankful for the cameras as it’s shown that she’s really worth the trust the bosses give her.