Childless

I saw her in the market of miracles.
On her throat: charmed coins, wolves' teeth, moon-gems.
She said: my womb is locked and alone.
Sell me the key to its loneliness.
I'll pay you whatever I have:
Here are the coins of my next life.

Background: barren women used to wander among miracle workers, against their rabbis' advice- they said they are selling like this their next life.