Daughters of the Dagger (Prequel)

Mirabelle de Burgh is desperate to give her husband an heir. She's heard
of the superstition that to buy a jeweled dagger from a blind old hag
would ensure her of conceiving a child. One child for each dagger
bought. The old hag she hunts down has many jeweled daggers, but
Mirabelle has limited coins and wants many children. Her greed gets her
in trouble and she finds herself in a predicament which causes many
circumstances in her life to change.