Colorado does recognize a cause of action for Intentional Interference with Contract, which occurs when a person "intentionally and improperly interferes with
the performance of a contract... between another and a third person by inducing or otherwise causing the third person not to perform the contract, is subject to liability to the other
for the pecuniary loss resulting to the other from the failure of the third person to perform the contract." Slater v. Driving Force, LLC, and cases cited.
So, in order to sue her, there are a couple of things that you have to show. First, that you had existing contractual agreements with the people she was turning away/giving medical advice to or otherwise making not want to come to your practice. Second, that she was doing this on purpose (meaning that she was malicious and not just very bad at her job), and that she had an improper motive. The fact that she worked for you could make it tough to show an improper motive unless she was working with someone who had a competing practice. And in that case, you could sue that person, too, for conspiracy and intentional interference. But if you can show all of those things, then you could have a case against her.
If you have any questions or concerns about my response, please reply WITHOUT RATING. It's important that you are 100% satisfied with my courtesy and professionalism. Otherwise, please rate my service positively so I am paid for the time I spend answering questions. If you are on a mobile device, you may need to scroll to the right. There is no charge for follow-up questions. Thank you.