is simply a Latin American respelling of Jadira, which is the feminine form of the Arabic male name Jadir. According to Muslim & Parsi Names
by Maneka Gandhi and Ozair Husain
, Jadir means "worthy, suitable, fit, proper" in Arabic.
In Latin American Spanish it is very common for parents to respell names that start with J- in English with an initial Y-. One can easily find examples of Hispanic American girls with names like Yessica, Yoselin, and Yaneth, which are simply respellings of Jessica
, and Janet
. Sometimes these names seem to be pronounced with the English "J" sound by those who bear them and sometimes they are said with English consonantal "Y"; there doesn't seem to be a consensus on that as far as I can determine. So I suspect that some bearers of the name Yadira
say "Yah-deer-ah" and others say "Jah-deer-ah".