She faces five years to life in prison.
Tata was on trial only in the death of Elias Castillo, 16 months. Also killed in the daycare fire were 3-year-old Shomari Leon Dickerson, 20-month-old Kendyll Stradford and 19-month-old Elizabeth Kajoh, The Houston Chronicle reported.
In closing arguments Monday, defense and prosecution attorneys played a video taken Feb. 24, 2011, showing Tata interacting with the young children, the newspaper said.
The fire was started when a pot of oil Tata left on a burner caught fire while she left the children alone to go shopping.
Mike DeGeurin, Tata's lawyer, told the jury, "She didn't have a private, personal life except with those children," and took them everywhere, including church.