Sister is having issues with ex partner who is the father of her 8 year old. He had not seen the child since they were newborn. However, he had heard that they are moving house and has now started emailing to find out the new address. He said he will contact the police if she doesn’t. They is domestic violence history from him against her too. Does she have to do this? She is very frightened and I thought someone on here might be able to help.