I guess it’s usable. It’s pretty, looks nice, and has a good sound. However, it’s definitely one of those names that teachers, substitutes, doctors, etc. would pronounce incorrectly all the time.
There was a girl named Khylin (kye-lynn) in my class during eighth grade, and I remember always correcting subs on how to pronounce her name. So, if Khylin was always mispronounced, imagine how bad it would be with Nimue
What are some good, rare nature names?