Mother of 6-year-old boy who shot teacher gets sentenced to PRISON, but is this long enough??

The sickening story of a little 6-year-old boy who shot his teacher just keeps getting worse. The mom was sentenced to 21 months in prison for using marijuana while owning a firearm, according to the crime news report on USA Today. Her name is Deja Taylor and she is obviously not a very good parent if her kid was able to take a gun to school and shoot a first grade teacher. The crime report on USA Today said the following:

Authorities have said the boy used his mother's gun and shot [Abigail] Zwerner while she was reading to students in her classroom. Zwerner was shot in the hand and chest and has filed a $40 million lawsuit against the school district alleging gross negligence. She was hospitalized for two weeks and underwent multiple surgeries. Taylor's son told police after the shooting that he stood on a dresser to take his mother's gun out of her purse, court records said. "My mom had that gun," the boy told officers. "I stole it because I needed to shoot my teacher."

But wait, there's more.The story about the 6-year-old boy who shot his first grade teacher gets even worse. The report continued:

In June, Taylor, 26, pleaded guilty in federal court to two charges: using marijuana while owning a gun and lying about her drug use on a federal form. Taylor also pleaded guilty in August to child abuse in a state-level case for which is scheduled to be sentenced in December. Taylor's grandfather currently has custody of her son, prosecutors said.

I hope this child gets the help he deserves, and that means being far away from this negligent mother. Is 21 months in jail long enough for being so negligent that a tiny child was able to bring a gun to school and shoot his teacher?