He said: "I used to check up on her all the time, I was incredibly protective."One day when I was taking her over some shopping, I noticed she was looking brighter, and she told me she'd met someone online."She showed me their messages to one another and I was horrified.
They were very sexual and he'd even sent her pictures of his privates."I feared he was just after one thing, and told her as much.
The 33-year-old was jailed for a minimum of 17-and-a-half years after he admitted murder in July last year.
Liverpool Crown Court was told Hawke, of no fixed abode, moved into Sharon's house after just one date, and started controlling the 39-year-old, who suffered from depression and had learning difficulties.
Alexandra Shipp and Brianna Hildebrand both played superheroes in the FOX Marvel Universe.
Alexandra played Storm in X-Men: Apocalypse (2016) and Brianna played Negasonic Teenage Warhead in Deadpool (2016).
After stabbing Sharon, Hawke had a beer before calling the police.
We had a butterfly theme as they were Sharon's favourite – delicate and beautiful, just like her."The trial at Liverpool Crown Court heard how the couple had been rowing over what to watch on TV.
An alcoholic, Hawke had drunk 15 pints of lager and a bottle of vodka. Apparently Sharon had begged for her life and held her hands up to protect herself.
Just three days later, on July 13, 2014, police found her dead in her flat in Liverpool.
And now Stephan, from Wirral, Merseyside, is determined that his sister's death will not in vain.