Analysis of My Only Sister

My only sister,
used to be there for me,
used to take care of me,
used to show love.
Where did she go?

My only sister,
used to teach me,
used to show me,
everything i know.
Why did she leave?

My only sister,
is lost and not found,
is gone without a goodbye,
she is not here.
Will she ever come back?

My only sister,
is no longer my sister,
is no longer someone i know,
where did she go?

I need my sister
Back here, at home.