"Like the four adult accused are expected to get death sentence, he (juvenile) should also be hanged," she said.
She was asked if the maximum sentence of three years under the Juvenile Justice Act, if awarded, is commensurate with the crime.
"This day reminds me of the morning of December 17 when we heard of the crime committed against our daughter," she said.
The victim's mother said, "Earlier, we were praying with folded hands before doctors and God for our daughter's life. Now we are praying before the Juvenile Justice Board (JJB) to convict her assaulter and award the maximum sentence."
The student died in a Singapore hospital on December 29. Her mother also said she was satisfied with the proceedings and was sure of justice for her deceased daughter.
The Board is expected to deliver the verdict, as the apex court had on August 22 allowed it to pronounce the judgement in the case against the juvenile.
The Board, which convicted the juvenile for robbing Ramadhar, a carpenter, who had boarded the bus on the night of December 16, 2012 and was thrown out before the girl and her friend were assaulted, is also expected to pronounce the sentence in the robbery case.