Real estate agent switches brokerage before escrow closes

[David Lowrimore]

I'm wondering if anybody has experienced this or heard of this before and if this is normal or a red flag?

Our real estate agent has been great and found us a good house hack. We put in an offer and fast foward we close in 2 weeks. Without any warning we get an email from her stating she switched real estate brokerages and our escrow will remain in the company she left. 

I was working on building a team for future investing and thought she was a great fit but this seems slightly unprofessional and rude for at least no warning. Am I wrong in thinking this or is this a big red flag not to do business with her again?