Casey Anthony's defense team said it plans to rest its case Thursday, but it remains unclear if the Orlando, Fla. woman accused of murdering her 2-year-old daughter Caylee Anthony will take the stand to testify, ABC News reported.

Judge Belvin Perry also warned the court to prepare to work though the July 4 holiday weekend, saying it will be up to the jurors how much they want to work this weekend. But as they are sequestered, it is believed they will want to work.

I wouldn't make any plans for Sunday or Monday, Perry told the attorneys.

The announcement about the trial's progression followed an emotional day of testimony, as the defense strategy brought Casey Anthony's parents to the witness stand for the third time, in an attempt to portray the Anthony's as a dysfunctional family.

Casey's father, George Anthony, dealt a blow to his daughter's defense by saying she was the last one to see Caylee Anthony alive.

He also proffered details about his 2009 suicide attempt. Casey's defense has used the testimony of others to try and bolster the theory that Caylee accidentally drowned and that George Anthony helped dispose of the body. The defense also claims that the 25-year-old Mom hid the death just as she hid years of alleged sexual abuse at the hands of her father.

George Anthony adamantly denied those charges, and divulged details of his suicide attempt after learning that Caylee's remains had been discovered in a wooded area near the Anthony family home in Orlando, Fla.

My emotional state even through today is very hard to accept that I don't have a granddaughter any more. But for that particular day (Jan. 22, 2009)... it just felt like the right time to go and be with Caylee, he said.

He said that he attempted suicide with a mixture of medications and beer and described writing an eight page suicide note.

I wrote this specific letter to my wife Cindy to tell her how I felt and how I didn't want to be in this world anymore, he said.

Sally Karioth, a professor and grief expert at Florida State University, testified that no two people grieve alike.She said young adults, like Casey can sometimes be reluctant grievers. That grief could manifest itself in risky behavior. Such people often suffer from survivor's guilt, she said.

While admitting she did not know the facts of the case, she explained that she was under the impression that her testimony would discuss general research on grief and loss, and that the case related to a young mother who lost her child.

Casey Anthony could face the death penalty if convicted of murdering her daughter.