Hay said it was merely a 'coincidence' that the two most recent deaths were of women who belonged to his agency.
It is not known how she got the substances into the facility where she was being treated for addiction.
The actress, who used the screen name Olivia Voltaire, is believed to have died from mixing prescription drugs and.
Direct Models said Lua had been battling addiction for some time and was seeking help.
Olivia's agency said they were shocked by her death.
August Ames, 23, right hanged herself on December 5 Days before her death, Lua shared cryptic social media posts including one which read 'no one alive can be an angel forever'.