where's your brother or sister live?

Today we were talking about where everyone lives. The conversation went like this:

me: "Lucy, where do Mimi and Granddaddy live?"
Lucy: "Washington, D.C."

me: "Lucy where do you live?"
Lucy: "Richmond"

me: "Where do I live?"
Lucy: "Richmond"

KK (my sister): "Lucy, where does your brother or sister live?"
Lucy: "too far away."
me: (crying)

When we ask that question, we've taught her to say "Rwanda", which usually sounds like dawanda or Dejuan (our neighbor)..but we've never told her to say "too far away." oh, boy. I about lost it.