When asked where she saw herself in 10 years time, she said she planned on graduating school.
Direct Models said Lua had been battling addiction for some time and was seeking help.
Shyla Stylez, 35, died in November and her cause of death is still unknown.
But she said she was comfortable 'within seconds'.
Days after Ames' death, 31-year-old Yurizan Beltran died of an apparent drug overdose at home in California.
Stylez left the porn industry in 2016 after 10 years.
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In December, actress August Ames, 23, hanged herself in California, where she lived with her husband.