I went to BTN because it seemed so random that I expected it to be a legit ethnic name. It suggested Acacia which I actually have always liked the sound of but hate the meaning and Akachi which is legit and the meaning is nice. Not something I'd pick but knowing the source now I wouldn't side eye.
Re: Church gem?
Is her nickname Kashi, like the cereal??? <eyeroll>
And FWIW, Acacia is the name of my husband's college fraternity... pronounced uh-KAY-sha. It's also a kind of tree.