Swahili: Liberian Girl

[Latinoamericana]

Hello.
I don't know if you're familiar with it, but there's this one Michael Jackson's song called "Liberian Girl" and in the song there are some lyrics in Swahili.
So I was wondering does anyone know how to say Liberian girl in Swahili?
I googled it and I got this translation for the word girl:

girl mwanamwali (before initiation)(noun)(1/2), mwanamwari (before initiation)(noun)(1/2)

I don't really understand what's the difference between mwanamwali and mwanamwari, and I couldn't find any translation for the word Liberian.
So I'm pretty much back at the beggining and I have nothing. Could someone help me with this?
Thank you.

 

[L'irlandais]

...I don't really understand what's the difference between mwanamwali and mwanamwari, ...

"Jambo. Habari gani?" (which means "Hello. How are you?")
Kijani Mwana Mwali is a traditional Africian song meaning "Young girl of Kenya" So the Swahili Mwana Mwali might mean young girl, I think.

The difference between this and the second term : mwanamwari = maiden (pl wanamwari = maidens) is that mwanamwari used for a girl who has reached puberty.

In swahili the country is simply called Liberia. However I have no idea how one would express this in the possive case in that language.

Michael Jackson kaimba Kiswahili = Michael Jackson sang in Kiswahili

I hope this goes someway toward an answer.

Hakuna matata Which means "There are no problems" ; it also means I watched the Lion King.