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
Officers say the child, aged two, was targeted in the Lewisham Shopping Centre.
New figures show London Fire Brigade received 6,820 malicious hoax calls last year, almost twenty a day.
A production company has admitted health and safety breaches after Harrison Ford was crushed by a hydraulic door while filming Star Wars.