Not “dumped”.
Cancelled.
No brokerage will hire her now.
I worked with Denice Reich on a project 20+ years ago. She is a very smart woman and what is known in real estate business as a Heavy Hitter. Since Realtors are not employees but independent contractors, she will not have any problem moving to a new brokerage, or start her own. I can name at least 5-10 brokerages that would pay her to have her name on some of their signs.
She’ll have no problem finding another brokerage. Agents are independent contractors and pay the brokerage to work out of their office.