She seemed fine with taking advantage of the system
Can you explain to me how she was taking advantage of the system, because I have a hard time comprehending it? She started a business and created new jobs for people, how is that taking advantage of anything? Sure, one could say that it's unfair that she used to employ mostly JWs, but then again, saying that you probably forgot what it means to be a JW. You're brainwashed. You are told that the world is ruled by Satan and the only reliable people are your brothers and sisters. This is Psychomanipulation 101.
She got the benefits of being a JW for many years I presume and then she didn't.
She was a JW only for one year, so she didn't get so many "benefits" from it I presume.
why close the business, why not just hire new staff?
Like I've said, hiring is a process, you cannot do it overnight especially in a business where you have constant turnover, guests coming, etc. You need to provide training for people on different positions. This just cannot happen in 24 hours, and then you still need time to settle stuff with the old crew.