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A Detroit mother accused of killing two of her children and storing their bodies in a deep freezer greeted a courtroom Friday by holding up her middle fingers — a day after she confessed to the murders during an outburst before the judge.

Mitchelle Blair, 35, was charged in April with two counts of felony murder, two counts of premeditated murder and one count of torture in the deaths of her children, Stoni Ann Blair, 13, and Stephen Gage Berry, 9.

Their bodies were found in a freezer in Blair's home during an eviction, and would have been 15 and 11, respectively, if they were still alive, according to the Wayne County Prosecutor's Office.

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Related: Detroit Children Found in Freezer Died of Blunt Trauma, Autopsy Finds

In a custody hearing regarding Blair's surviving 8-year-old son and 17-year-old daughter that started Thursday, Blair screamed out while the 8-year-old testified that he saw his mother kill his siblings.

"Everybody wants to know. Yes, I did kill her!" Blair shouted, according to NBC affiliate WDIV. She had a similar outburst of confession later in the day.

In another interruption, Blair denied that her 8-year-old son saw her kill Stephen because it was "unintentional."

After Thursday's commotion, and an apology from Blair's lawyer, she walked into the courtroom Friday waving both middle fingers.

Judge back. Waiting for Blair. So far no outbursts like yesterday. If you're scoring at home, 3 admissions of guilt in 2 days. #local4 — Jason Colthorp (@JasonColthorp) June 5, 2015

The state also seeks to end the parental rights of the fathers of the two surviving children.

Alexander Dorsey, who fathered the 17-year-old and Stoni, and Stephen Berry, who fathered the 8-year-old and Stephen, have both testified during the custody hearing. Both men owe thousands of dollars in child support, according to WDIV.

Blair was ordered to undergo psychiatric evaluations in connection with her murder trial, and her next hearing is June 19.