I had two sister Borzoi and lost one of them last year. They were 10 at the time and had been together since birth and I feared Fiona would be lost without her best pal Larisa. One could not leave the room without the other getting up to go see where she went.
Well long story short, Fiona has never been happier. She is now able to leave the room without being followed, eat her cookies in peace and she still has another "brother" to boss around should the need arise. I too don't want to add dogs at my age so I was happy with the adjustment. I'm sure yours will adjust as well.