Have you ever "googled" your horse? I did and I was surprised to see Maddy, aka "Harts Bonnie Dee" is still for sale down in southern California. I was taken to the Hart Quarter Horse Ranch site and there she was in the header picture on the website.
She is the dun standing back on the sandy ridge looking at the camera. I would recognize that mug anywhere. This second photo is her "for sale" picture. She looks kind of out of shape and depressed. It is not a very flattering photo. After spending her formative years roaming the Hart Ranch, she was brought up to Yreka, California for training and posted on Dreamhorse where I came across her and brought her to Oregon.
Haflinger for sale
5 hours ago