Niviarsiaq is also used as a masculine name in Greenlandic. However, it's more common for females. So, I think that the "Gender" of this name should be changed from "Feminine" to "Feminine & Masculine". Some variants of this name are Niviarsiaĸ, Niviaĸ, Niviaq, and Nivi (diminutive).Sources: https://forebears.io/x/forenames/niviaq https://forebears.io/x/forenames/nivi
This is technically not a Native American name. It's a Greenlandic name, but I've never heard it used by Alaskan or Canadian Inuit people. Also, the meaning is incorrect -- it should just be "girl". Young woman would be arnaraq. [noted -ed]
Sources: https://forebears.io/x/forenames/niviaq
https://forebears.io/x/forenames/nivi