We died that our mother might live

Her tears had fallen more in number
Than the sands across the great desert
For we'd been forced to defend her
Nomadic raiders killed our defenders
Our queen had given all birth and life
And alone was seated in great power
If she had fallen ill, we all should die
As our memories and customs lost
She'd held us close, even as we fell
It was not our walls had collapsed 
It was that our hearts truly had
In the end, she had survived
All our lives endured, went on
Our memories serve as comfort
As our time reaches the horizon