Maybe she got fired. Emirates is much better - salary, life qualiy, destinations - than Qatar, Saudi or GulfAir, it doesn't make sense to change EK for something else in the Gulf. Especially if you made it to Business or First Class already.
The dates of open days and assessment days are available on the homepages of these companies. Qatar is hiring non-stop, you just have to check the career page.
I have no idea why someone registers on pprune instead of looking up the information on the airline's homepage... It's very strange (stupid?!) from an experienced cabin crew.