Direct Models said Lua had been battling addiction for some time and was seeking help.
Stylez died in her sleep at her mother's home in Calgary on November 9.
The first death was that of 35-year-old Shyla Stylez.
It is not clear if any of the five models who have died recently knew one another.
The actress, who used the screen name Olivia Voltaire, is believed to have died from mixing prescription drugs and.
Olivia's agency said they were shocked by her death.
He said it was a 'coincidence' that the two most recent deaths were of women who belonged to L.
At first, it was suspected that drugs or alcohol may have played a part in her death.