entered a 12th day Wednesday. The jury is hearing testimony from Latiesha Dukes, a mental health counselor who worked with Clancy.

You can watch the trial in Plymouth Superior Court live on CBS News Boston in the embedded video or on YouTube when court is in session.

Clancy, 36, is charged with first-degree murder in the deaths of her three children, 5-year-old Cora, 3-year-old Dawson and 8-month-old Callan, in their Duxbury home on Jan. 24, 2023. She has pleaded not guilty.

Prosecutors Jennifer Sprague and Shanan Buckingham said Clancy and faked a suicide attempt.

Clancy's attorney Kevin Reddington said to killing her children but says she should not be held criminally responsible because she was overmedicated and suffering from postpartum psychosis.

Massachusetts State Police investigator testifies

Earlier, Sgt. Dan Lawlor testified. Lawlor has worked for Massachusetts State Police for nine years.

The night of the children's deaths, Lawlor went to South Shore Hospital in Weymouth and saw Clancy, who was unable to speak and suffering from injuries after jumping out a second-floor window.

Lawlor went to Boston Children's Hospital to check on 8-month-old Callan's status, then later went to Brigham and Women's Hospital, where Clancy was transferred, to stand watch outside the room.

Reddington took over cross-examination after about 15 minutes. The defense attorney asked Lawlor about how no one was allowed to get into Clancy's hospital room. Eventually, Reddington got a court order for psychologist Paul Zeizel to enter the room to meet with Clancy.

"Isn't it fair to say that one of the contentions of the district attorneys is that Paul Ziezel, my doctor, that I got a court order to get in and see her, told her to call Pat and tell him that she heard voices?" Reddington asked.

When Reddington referred to Pat, he was speaking about Patrick Clancy. Lindsay and Patrick Clancy were married at the time of their children's deaths, but have since divorced.

Following that question, the judge asked to see attorneys at sidebar due to an objection by the prosecution. After about 20 minutes, the judge sent jurors out of the room to question Lawlor without the jury present.

With the jury out of the room, Reddington asked about Lawlor's recollection that lead investigator Josh McKelligan had told him that at some point when Clancy was hospitalized, she called Patrick to indicate she was hearing voices. Reddington suggested that the theory investigators were trying to use was that Ziezel had suggested Clancy make the phone call.

"I don't know if it's a theory or not, I just recall the conversation," Lawlor said.

The prosecutor then questioned Lawlor without the jury present.

"You never had a conversation with the prosecution about what the theory was, did you?" she asked. Lawlor said he had not, saying it was only with the fellow trooper.

"Is this conversation guiding your testimony?" Buckingham asked. Lawlor said it was not.

The judge took arguments under advisement and the jury returned a short time later.

With the jury back in the room, Reddington asked Lawlor if he and McKelligan talked about the theory that Ziezel "is the reason that she told her husband she heard voices." Lawlor said they did talk about that theory.

"There's no investigator basis for that, that's McKelligan's speculation, correct?" Reddington asked. Lawlor said that was correct.

Buckingham then questioned Lawlor.

"Is it fair to say you oftentimes will have conversations as investigations are unfolding with other investigators that you're working on the case with about the case, potential evidence, theories of the case?" Buckingham asked.

Lawlor said that was true, and added that theories can change over time.

Buckingham asked Lawlor, "You didn't hear anything that occurred in that room that day that you were there when Dr. ZIezel was there, did you?"

"I did not hear anything," Lawlor said, concluding his testimony at around 10:45 a.m.

Lindsay Clancy trial

The jury heard from a psychiatric nurse practitioner Tuesday who specializes in postpartum patients. Rebecca Jollotta said she met with Clancy three times late in 2022, a few weeks before the murders. Jollotta was the 62nd witness in the trial.

Judge William Sullivan said the attorneys told him the proceedings are "well on schedule and somewhat ahead of schedule."

If convicted of first-degree murder, Clancy faces life in prison without parole. If the jury finds that she was not criminally responsible for the deaths of her children, she will be sent to a state psychiatric hospital in Massachusetts.

If you or someone you know is in emotional distress or a suicidal crisis, you can reach the 988 Suicide & Crisis Lifeline by calling or texting 988. You can also chat with the 988 Suicide & Crisis Lifeline here.

For more information about mental health care resources and support, The National Alliance on Mental Illness HelpLine can be reached Monday through Friday, 10 a.m. to 10 p.m. ET, at 1-800-950-NAMI (6264) or email info@nami.org.