Stopping former colleague's harassment

Hi,

I have an ongoing harassment issue with a former colleague.

She created fake Facebook accounts and sent messages to my family and friends accusing me of adultery and threatening.

At that time, I did not know who she was as all the accounts were fake, however, yesterday she sent a package to my family with a document of my photos, WhatsApp messages, and allegations against me.

She also sent me abusive emails for months which included threats of defamation and threats against my family, but I did not reply. She bombarded my employer pretending to be my wife, requesting my HR records. I had to leave my jobs because of embarrassment.

I decided to report her to the police, however, because of work commitments, I am in the UK and will only return in January. The police have advised me to return and file a case. I would like two services:

1. Send a cease and desist letter to the person harassing me to stop.

2. Represent me whilst I am abroad to pursue this case.