Meghana, a nine-month-old girl, who, according to the police, was poisoned by her mother at her residence in Kanakanagar in DJ Halli police station limits on August 4, lost her fight for life at a hospital here on Sunday. On August 4, the girl's mother, Usha (21), according to the police, poisoned her two daughters, Meghana, and three-and-a-half-year- old Gagana, before she consumed poison. Later, the three were shifted to Dr. B R Ambedkar Medical College and Hospital. Usha's condition is also critical, while Gagana is recovering. According to the police, Usha married Anand, an electrician working in Koramangala, five years ago against the wish of their parents. The police have booked Usha for murder.