Killa is the Quechua (Inca) word for "moon." Mama Killa was the Inca moon goddess — sister-wife of the sun god Inti.
Killa is rising in Peru, Bolivia, and Ecuador as part of the Quechua revival.
Killa does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
—
In Pythagorean numerology the letters of Killa reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.