Samia Shahid, from Bradford, was allegedly raped before she was strangled to death in a village in Pakistan's eastern Punjab province.
The 28-year-old was visiting family in July when she was found dead of what were initially assumed to be natural causes.
However her father and uncle have now been arrested in connection with her death alongside her ex-husband, who is also her cousin.
And it has now emerged that the day before she flew to Islamabad on July 14, she sent a text to her pal Laila.
"Pray I come bk alive on 21jult my psyco cuzzan u see," [sic] it read.
A fresh inquiry into her death was ordered after her husband, Syed Mukhtar Kazam, publicly accused her family of murdering her in a so-called honour killing.
Mr Kazam believes his wife was killed because her relatives opposed her decision to divorce her first husband in 2014 and marry him.
An investigation concluded that Mrs Shahid had been strangled.
Her former husband, Choudhry Shakeel, has been detained as the prime suspect in the murder, according to reports in Pakistan.
Her father has also been detained by police, after his daughter was allegedly lured to the country on the pretext he was seriously ill.
And her uncle, named as Haq Nawaz, is understood to have been held by officers on suspicion of falsifying medical files.
Pakistani police spokeswoman Nabila Ghazanfar said a forensic examination confirmed the victim was raped before her death.
She also said a local police chief has been suspended for mishandling the case, and allowing Mrs Shahid's mother and sister to flee the country.
Investigators are seeking their return for questioning.
Mrs Shahid married her second husband in Leeds in September 2014 after she left her first husband.