Jurors have completed a second full day of deliberations without reaching a verdict in the trial of a woman accused of gunning down her daughter-in-law two years ago in Snellville.

The jury will return to work at 9 a.m. Wednesday.  Joanna Hayes faces life in prison if convicted of murdering Heather Strube.

WSB legal analyst Ron Carlson says it's too early to tell where the jury is headed.  He says the longer jurors deliberate, the more clear it is the defense was able to raise questions in the jurors minds.

Tuesday, jurors asked to hear the phone call again between Joanna Hayes and her son. In that call, Hayes' son essentially accused his mother of murder.

"Mom, why did you do it?" Steven Strube asks in the tape. "It looks just like you."

"Joanna Hayes did not do this thing," Defense attorney Bruce Morriss said during his closing statement Friday.

Prosecutors say Hayes was wearing a wig and fake mustache when she put a gun to Strube's head in the parking lot of a Target in Snellville in April of 2009 and pulled the trigger.

"You have to be confident in your disguise before you commit a murder like that," Assistant district attorney Dan Mayfield said during his closing statement. "What better disguise than to disguise yourself as a man."

Hayes' son and daughter-in-law were in the middle of a bitter divorce, and the state contends Hayes committed murder to prevent custody of the couple's 18-month-old son from going to the mother.

"She did not approve of Heather as a mom," said Mayfield. "She committed this murder out of some sick sense of family."

"People divorce, change custody hundreds of times a day, likely, in metro Atlanta," said defense attorney Bruce Morris. "Is this really the basis for a killing?"

Hayes faces four counts including murder, felony murder, aggravated assault, and possession of a weapon during the commission of a felony.

The final witness for defendant Hayes was Heather Kleider, an eyewitness expert who says police should have shown witnesses photo lineups of both male and female suspects--not just all female--as they tried to find Strube's killer.

"If you say that you saw a person of one gender, and then you're shown a lineup of a whole 'nother gender, then that would throw into question everything that you said that you saw to begin with," Kleider told the Gwinnett County jury.  "Because now, the police must know more if they're showing you something else.  So that would be highly suggestible."

Morriss has consistently argued that police zeroed in on Hayes early on in the investigation, and never looked for other suspects.

Last week, Hayes told the judge she did not want to take the stand.