Azra Miraj was on her way home with her seven-year-old daughter Noor Fatima, when two men on a motorcycle threw acid on them yesterday in Faisalabad, 100 km from Lahore.
The attackers fled after the crime. The acid burnt part of Miraj's face and arm while her daughter suffered burns on her leg. Both were taken to the Allied Hospital, where doctors described their condition as stable.
They said Miraj could lose her eyesight.
At least four women in Lahore and Gujranwala districts have been attacked with acid in recent days.
The assailants are yet to be identified and police have not made any arrests.
Under a new law passed last year, persons convicted of acid attacks face a tougher sentence of between 14 years and life imprisonment.
However, most acid attacks are not reported to police and the attackers get off without punishment, rights groups say.