Vanessa Guillén, her family told The Washington Post on Sunday, more than two months after she vanished from Fort Hood.

Investigators moved too slowly to piece together evidence and secure phone data that led to the suspects more than two months after Guillén disappeared, said family attorney Natalie Khawam, who took the case pro bono.

Robinson and Aguilar dismembered Guillén, tried to burn the remains and buried them in separate holes, investigators said, before returning four days later to break up the remains, using concrete to conceal them.

On May 18, the day after witnesses told investigators that Robinson carted off the box, Robinson consented to a search of his phone that showed multiple calls to Aguilar the day of Guillén’s disappearance.

Another month passed before investigators said Aguilar was interviewed about the calls, told agents she was with Robinson at his home the night of the killing, then recanted and said she was with him driving around, according to the complaint.

On June 21, investigators searched the area and found a smoldered pit and trees that had fire damage, said Tim Miller, director and founder of Texas EquuSearch, a nonprofit organization that assists in searches and helped on the Guillén case.

Police had Aguilar call Robinson, the complaint said.

“Baby, they found pieces, they found pieces,” Robinson told Aguilar.

Soldiers were confined there because of the pandemic, Khawam was told by investigators.

But Khawam said the family was briefed for hours by CID officials and relayed statements made by Aguilar.

She told investigators that Robinson told her Guillén saw a photo of Aguilar on his phone, and she knew Aguilar to be an estranged wife of a former Fort Hood soldier.

Adultery is a crime in the military, and Robinson allegedly had told Aguilar that Guillén said she would report him, Aguilar recounted.

But the family does not believe that version of events, and said that if Guillén were to report anything about Robinson, it would be harassment, Khawam said.