Dating a woman she met
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.
And now Stephan, from Wirral, Merseyside, is determined that his sister's death will not in vain.
If only I'd been there."He was savage, her injuries were unbelievable.
He'd even ripped through her ribcage."When the judge sentenced him to life in prison it was justice of sorts, but all I really want is my beloved sister back.
He was suspended from duty throughout and considered killing himself to end the shame of being falsely labelled a rapist.
PC Morgan told the Swansea Crown Court the allegation had devastated his life and that he had considered suicide daily.