Thirty-two year-old Virgie Collaso is now charged.
An arrest affidavit states she admitted to holding down the boy while 23-year-old Sergio Ramirez, who was previously arrested, spanked him with a belt.
Investigators say the boy told them Ramirez had hit him repeatedly with his open hand and a closed fist on his head, face and back.
He also said Ramirez sat on his back while hitting his buttocks with a closed fist and belt.
The officer reported finding redness and swelling on the top of the boy's head, and cuts and bruises under his eyes and around his shoulder.
Both remain behind bars in the Wichita County Jail.
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