Sarah Webster, 30, of Aberfield Drive, Belle Isle, Leeds, was found dead at 2.15am on Saturday. Police said yesterday a post mortem examination had proved inconclusive and further tests were being carried out to establish how she died.
West Yorkshire Police said yesterday a 33-year-old man arrested on suspicion of murder had been bailed pending further inquiries.
Ms Webster was handed a 12-month sentence suspended for two years after she admitted having sexual activity with a child in April 2008.
That hearing, at Leeds Crown Court, was told that Webster had sex with a 13-year-old boy between December 2007 and January 2008 and while on bail for that offence the teenager went to her then address at Middleton Way, Belle Isle, and was discovered in her bed.
When sentenced she was given a two-year supervision order and told to live at a probation hostel for a year.
Webster was back before the court in December 2008 when it was heard she had breached her order and she was jailed for 12 months.