Naomi Oni, a Victoria's Secret shop assistant, was left scarred for life after suffering serious burns on her face and chest in the incident in Dagenham, east London, in 2012.
Her former friend, Mary Konye, 22, who disguised herself in a Muslim veil before throwing the sulphuric acid, was jailed for 12 years last week.
Ms Oni told the BBC Radio 4 Today programme that police were slow to act on information she gave them about the attack.
She said it almost felt like she had "been accused of lying", adding that she had suffered "pain and backlash for her (Konye's) actions and other people's incompetency".
More top news
Taxi driver Waseem Anwar Choudry packed his wife's bag with 3.5 kilos heroin which he had hidden inside dresses.
The Danish-born comedian said she couldn't imagine anyone more "inappropriate" for the job and has no intention to run
Colleagues and public remember "extremely popular" police officer who collapsed in central London on his way home from a night shift.