Carly Harris, 37, was interviewed by cops after the discovery of Amelia Brooke Harris’ body in Rhondda, South Wales.
She will appear at Merthyr Magistrates’ Court tomorrow charged with murder.
A statement released by South Wales Police, the little girl’s family said: “On Friday night we tragically lost our baby girl Amelia Brooke Harris.
“A loving daughter, sister, granddaughter, great granddaughter, niece and cousin.
“Amelia was beautiful both inside and out – and was a fun-loving, caring and bubbly little girl.