The judge asked suspect Melinda Muniz questions directly Friday, but without the jury present.
Muniz responded "Yes," when asked if she would testify, and answered "No," when asked if anyone had pressured her to make that decision.
The interaction came after the state rested its case against her.
The state's final witnesses included more experts who backed up its claim that a year ago, Muniz killed her ex-fiancé's 2-year-old daughter, Grace Ford, then staged a phony home invasion to try and cover it up.
It all happened at the Plano apartment Muniz shared with Ford's dad.
A doctor testified that Ford had not been sexually assaulted as the crime scene suggested, nor had Muniz been raped by an intruder as she had insisted.
The lead investigator in the case testified she believed Muniz suffocated the toddler before she placed duct tape over her face, then used items she was seen on surveillance video purchasing minutes before to stage the cover-up.
The trial resumes first thing Monday morning.
The judge also reminded Muniz that she had the right to change her mind at any point before the moment arrived for her to testify.