Two pints from the article. First: "Tina's combination of inner-ear abnormalities is known only in people with Down's syndrome." And this:

"The survival of this child, beyond the period of breastfeeding, implies group caregiving, probably more extended than parental caregiving, typical of a highly collaborative social context among the members of the group. Otherwise, it is very difficult to explain the survival of this individual up to the age of six years," said Valentn Villaverde, a co-author of the study and an emeritus professor of prehistory at the University of Valencia.

Conde-Valverde said: "The discovery of Tina represents the oldest known case of Down's syndrome and demonstrates that the diversity observed in modern humans was already present in prehistoric times. This finding ensures that the story of human evolution includes us all."