Thank You to everyone for your kind words and assurance that I had made the right decision.
Animals are absolutely amazing. My vet suggested that I let Chantilly (my Belgian) come near him so that she would know. So I brought near him. She called to him a few times. He did not respond. I put her back in the field. She came to fence a few times after he was dead and then moved on. It was as if Chantilly accepted his departure. Because it was just the two of them, the vet thought it best that she see him through the process.
Fortunately for Chantilly we have the 4 goats which are her shadows that will keep her company. Can not really think about getting another horse at this time.
Thanks again!!