"Suffering no less than four miscarriages" sounds like you haven't decided how many she's actually had. Also knowing a little more about how she encounters the horse and what their relationship is like would strengthen it.

Thank you very much will work on it :)

Tighten it up. You have all the elements. Something like:

Gioia's dream of motherhood is jeopardized by her biological clock and the betrayal of her own body, but a chance encounter with a wild horse rescues her from the brink of suicide and helps her rediscover self-worth and purpose.

You get the idea. Good luck!

Thank you Stephen, amazing job I love your logline :)