My name is XXXXX XXXXX I'd be happy to answer your questions today. I'm sorry to hear that this happened.
If the previous employer does anything to interfere with her new employment, she can sue for Intentional Interference with Advantageous Relations. That's an intentional tort
, for when a person knowingly and intentionally sets to cause problems to someone else, without justification. Whether there is justification may depend on the specific circumstances surrounding her dismissal. For example, if a person who is fired for stealing gets a job at a bank, that new employer may have a legitimate interest in knowing about it.
Your daughter could also have a cause of action for defamation
of character, if the former employer makes any untrue statement of fact about her. There is some privilege for statements where there is a mutual interest, but that isn't going to apply if a person intentionally and maliciously reaches out to say things that he knows are not true.
One option is to send the former employer a "cease and desist" letter, explaining the situation and letting them know that she will not hesitate to sue if they tell false statements to damage her reputation or if they continue to interfere in her current employment. If the prior employer is part of a larger corporation, it might be worth talking to the district manager or the corporate office as well.
In the meantime, if she believes that her previous employer will continue to cause problems for her, she may want to consider whether to approach the current employer to explain the situation and let them know that they may be contacted.
If you have any questions or concerns about what I've written, please reply so that I may address them. It's important to me that you are 100% satisfied with the service I provide. Otherwise, please rate my service positively so that I get credit for answering your question. Thank you.