Why Rachel?
The name "Rachel" refers to an old testament figure who was written about in the book of Jeremiah. The exact biblical quote is this:

Thus says the Lord:

"In Ramah is heard the sound of moaning, of bitter weeping! Rachel mourns her children,
she refuses to be consoled because her children are no more.  

Thus says the Lord:  Cease your cries of mourning, wipe the tears from your eyes.

The sorrow you have shown shall have its reward, says the Lord

Why a Vineyard?
There are many images attached to a vineyard. It is a place where grapes are grown, pruned, lifted up and cleansed so they can bear a more bountiful harvest. Perhaps the most significant association with vine comes from the powerful and moving words of Jesus found in Chapter 15 of the Gospel of John: "I am the vine, you are the branches. Whoever remains in me, and I in him, will bear much fruit; for you can do nothing without me". 

In trying to understand the mystery of death, we look to God in times of personal distress, trauma, and the loss of human life. The death 
caused by abortion leads to anguish and intense yearning for someone who cannot be retrieved. We weep. We recall regrets, our role in what has happened and the child we will miss.