My Horse Died

Unfortunately the only way to bring her back would be by purchasing a Pandoras box which essentially revives them. How old was she? As the only catch is horses over 25 years do not apply for the Pandoras box

If you've already sent her to heaven, you can't

You can look her/ him up through the office tab go to your community tab to see Heaven / Haven tabs to see if you can find the horse that died ...

I think the horse that is missing is Gaia who actually belongs to Emma. She brings her along on your first day to teach you how to look after a horse and breed her twin foals. When that is done she goes back home with Emma ready to help the next new player.