Where does “رُکْسَانَه” come from?

رُکْسَانَه (Classical Persian) comes from Ancient Greek Ῥωξάνη, from Old Persian *rauxšnā, from Proto-Iranian ráwxšnaH, from Proto-Indo-Iranian ráwkšnaH, from Proto-Indo-European lówksneh₂, from Proto-Indo-European lewḱ-, from Proto-Indo-European lewk- — bright; to shine; to see.

Ancestry of “رُکْسَانَه”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Ῥωξάνη	Roxana wife of Cambyses II
2	Old Persian	*rauxšnā	light
3	Proto-Iranian	ráwxšnaH	light, brightness
4	Proto-Indo-Iranian	ráwkšnaH	—
5	Proto-Indo-European	lówksneh₂	moon
6	Proto-Indo-European	lewḱ-	lynx
7	Proto-Indo-European	lewk-	bright; to shine; to see

Every word from Proto-Indo-European lewk- →Every word from Proto-Indo-European lewḱ- →Every word from Proto-Indo-European lówksneh₂ →