She suffered the horrors of neglect, but in her last years found a true friend in another mare, Tarna.
Spindles Farm horse Angel was largely blind and Tarna had just one eye.
But, with just one good eye between them, they enjoyed their retirement at The Horse Trust’s sanctuary in Speen, Buckinghamshire.
Angel, described by the trust as a gentle soul, was farewelled early this month by the trust after suffering a severe colic attack.
The charity said Angel had been a firm favourite with visitors and staff alike.
She had survived the horrors of neglect along with more than 100 other horses, ponies and donkeys rescued from Spindles Farm, Amersham, in 2008, despite being in her early 20s and almost completely blind.
She went on to develop a powerful bond with Tarna.
Tarna had lost one of her eyes in an accident many years ago. She spent her days leading Angel, much as a guide dog leads a person.
Tarna always walked slightly ahead of Angel and between her and any fences or obstacles. They would both get extremely stressed when apart and if one was poorly the other would have to be brought along to keep her company when being checked over by the vet.
Angel suffered a severe impaction colic but, despite medical treatment, could not be saved.
It was felt that at 25 she was too old to be put through surgery, in addition to her blindness, which meant that going to hospital would have been exceptionally disorienting and stressful for her.
The hard decision was made to let her go.
Trust chief executive Jeanette Allen, said: “Angel was a real beauty and a very sweet soul.
“Tarna was with her at the end and was given time with her afterwards to accept that Angel had died.
“This has really helped her to cope with the stress of their parting and encouraged her to look for a new companion. We will all miss Angel hugely and now focus on helping Tarna in any way we can to settle without her dearest friend.”