Zara is not directly mentioned in Islamic scripture as a female baby name. However, it can be loosely interpreted from Arabic words related to purity, light, and brightness. For example, Allah says in the Quran:
“Allahu Samad [God] is above everything they attribute to Him as a partner.” (Quran 20:110)
From here we see God is described as a source of brightness, purity, and guidance for all creation. So, if one interprets the origin of Zara to represent these high virtues, then it could be seen as a lovely baby girl name choice for a Muslim family. Ultimately though, any good and decent name without polytheistic associations would suffice, since our true identity rests in submitting to Allah alone.