Minor translation thing, should be a really easy fix.
"Horse Emblem: Requested Stallion", according to BDOCodex, is always female. I'm no horse expert, but Google tells me "Stallion" means "male horse", so that should be changed to "Horse Emblem: Requested Mare".
I was pleasantly surprised to get a female horse, but due to expecting a male, I gave it male name, lol.
I have just redeemed one, she's a lady ;)
At least it's 2022 where female horses can identify as male horses without concern so you're good my friend ;)