Hi my friends ex has LOTS of screenshots of her admitting to texting other men hours after they split and also admitting to doing sexual things on the internet when she was single. He also has her admitting to a lot of other intimate things. She got a DNA test when she had a baby to this ex because he wasn't interested in the baby so she thought this would put his paranoia to bed and help them bond (he suggested and demanded the DNA test so she agreed for the reasons I just mentioned). He is now saying to her dad he needed the DNA to prove the child was his! He has sent her dad lots of messages telling him his daughter is a whore basically and is threatening to send all the things he has on her like the voice note of admitting to doing sexual things online etc. what should she do! Is this illegal??