Without referencing the divorce / custody case nor the car incident on his birthday, (both are public records with addresses, but reference non-POI or folks other than suspect in LE custody at this time), this is the most that can be said to this right now in MSM that I can find to help.
5-year-old Texas boy was dead for weeks before reported missing, officials say
"On May 27, Samuel’s father, Dalton Olson, called the police to report his son missing. He said Balboa had been babysitting the boy since April 30. Balboa told authorities that Samuel’s mother, Sarah Olson, had picked him up with a uniformed police officer.
Dalton Olson’s attorney says that he felt like it was possible because of the contentious divorce proceedings going on between the two.
Samuel’s mother and father were in court four days before Balboa made the claims........
About a year ago, she was charged in Galveston County with aggravated assault with a deadly weapon. She was accused of hitting Samuel’s father with a car.
Dalton Olson’s attorney says she was trying to take Samuel from his birthday party and, considering that, the story seemed believable."