Khansa is from the Arabic الخنساء (Al-Khansāʾ — gazelle with snub-nose) — from Arabic khanasa (to draw back). Khansa is one of the Arabic feminine names — central to traditional Arab + Muslim heritage.
Khansa 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 Khansa reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.