Police said Baker only visited her daughter on 22 occasions and Wiltshire never visited.
On 28 September, Baker entered a convenience store with Imani strapped in a sling.
"Miss Champion said she felt huge pain to her left eye, but her father then grabbed her by her throat, and continued hitting her." Swansea Crown Court heard her mother then yelled abuse at her pretty teenage daughter saying: "You deserve it.
In fact, the child had died at home 24 hours earlier, following months of physical abuse.
The week before her death, Imani was attacked three times and suffered 40 rib fractures, a broken wrist and terrible head injuries, jurors were told.
A couple attacked a mother and her 15-year-old daughter because they were unhappy with the food they were served at their restaurant.
Police are hunting Nathaniel Eric Smith and Latasha M.