With the murder charge, she faces up to life in prison if convicted.
She said her office had a "very spirited conversation" with the Texas Rangers, the lead investigators in the case, back in September.
Allison Jean said "I look forward to the next step, which is a conviction of murder of Amber Guyger and also of a penalty, the proper penalty, that will cause her to reflect on what she has done,".
We hope Botham Jean gets justice. "He didn't deserve that".
After listening to testimony all day on Wednesday, a Texas grand jury has made a decision to indict Amber Guyger for murder in the shooting death of Botham Jean this past September. "I said, 'Mom do you want us to stop and go to the grand jury?' And she said 'no, keep going'".
"At the moment of this shooting, it was an intentional and knowing offense", Dallas County District Attorney Johnson said.
CNN quoted Botham's mother, Allison Jean, as telling a news conference that she is satisfied with the Guyger murder indictment.
Attorneys for Jean's family said the affidavit contradicts neighbors' accounts of what happened.
Mata called for Guyger to have fair treatment, but also said she should answer for her actions.
Guyger's lawyer, Robert Rogers said, "This is a bad tragedy that resulted from a true mistake".
The grand jury's new indictment comes after deliberations and days of testimony from witnesses and Jean's family. "There was a lot of political pressure that seemed to play a role in how the DA handled this", Rogers said. It's an indictment.it doesn't mean anything. "We were determined to present to the grand jury all of the facts and explain to them the law", Johnson said.
Her husband took the microphone next, saying that their family is "hurting deeply" but take solace by the indictment. Jean attended Sir Arthur Lewis Community College in St. Lucia, before migrating to the USA in 2011 to study accounting and management information systems at Harding University in Searcy, Arkansas.
Public backlash also targeted the Dallas Police Department for waiting nearly three weeks to fire Guyger.
"We have developed the framework for policy change, have supported the restructuring of the Citizen Review Board, pushed to exceed the basic requirements of implicit bias training and have relied on input from our employee advisory and community advisory boards".
Guyger was sacked on September 24.
Guyger was sacked from the police department after the shooting. At that time many took to social media to angrily question why Guyger had been charged with manslaughter and not murder.