Police are warning people not to post malicious comments on social media about the death of a two-year-old Kiara Moore. The girl died after a car went into a river.
Kiara was found in the River Teifi in Cardigan, Ceredigion. She had been left in the Mini while it was parked on a slipway on 19 March.
Her mother posted on Facebook she would feel guilty for the rest of her life.
Dyfed-Powys Police asked people “not to speculate” on the circumstances.
The force said: “Posts considered to be malicious will be recorded and police action may follow.”
An inquest was also opened into Kiara’s death, and adjourned to a later date.
Kiara’s parents called the police around 15:30 GMT on 19 March after their silver Mini vanished from outside their business. The car disappeared from Adventure Beyond, with Kiara inside.
They initially thought it had been stolen from the slipway, but it was later found in the river by emergency services.
Police went into the water to rescue the girl and she was airlifted to hospital but died. The little girl would have celebrated her third birthday eight days later.
In a Facebook post on 19 March, which has since been deleted, her mother Kim Rowlands said her “beautiful baby girl” had died. “Due to my own stupidity, I will have to live with the guilt of this for the rest of my life.
“Mummy loves you baby girl and I’m so sorry.”
In a Facebook post, her father Jet Moore, said the pair had got in the car to go home when Kiara’s mother had to go back into the business to get some money.
He said: “Went back to the office to get money from the desk and came back to no car”.