It's understood she was going to call police and in the few minutes she was gone, Edwards allegedly took Gabriel.
The boy was found nearly seven hours later in a shed a few hundred metres away.
Police said he had been reunited with his mother, but Child Youth and Family yesterday confirmed they had become involved and were assessing the child's safety, regional director Sue Jarvis said.
However, CYF refused to say if Gabriel was now in their care.
After his comment was posted, Edwards' Facebook page was flooded with messages from supporters and those disgusted by his actions. Many asked him to hand himself in. Edwards posted: "Hate me Condem me then show me your [sic] perfect."
If anyone has seen Edwards or knows where he is, they should call the investigation team on 0800 332 334 or 111 immediately.