Can I sue someone for emotional distress?

My father passed away in July and my sister is the sole beneficiary. Everything is being handled through a law office that I am familiar with. Several weeks ago a woman came to my home to give me papers. She gave them to my husband and said I had to appear at a hearing because I didn’t sign a waiver or consent. I did not go. This past week the same woman emailed me at work to say she was retained by my sister and she threatened to come to my workplace if I didn’t sign the paper. I told her no and she said they would hire a process server. She was a paralegal at a law firm in Albany. I copied the partners of the firm on the correspondence. Yesterday I received an email from that firm to say they had absolutely no knowledge of the case and no one at the firm was retained. They fired the woman. I was absolutely shocked and upset and worried because this woman came to my home, contacted me at work and threatened to come there and posed as a lawyer.