Proof that Roach is a teleporting horse!

[Hayashi.226]

So there I was having just ridden into Upper Mill to visit the merchants and sell stuff. I dismounted near the fast travel point. I did my business then went back to Roach to find he wasn't there any more...

 

[Draconifors]

Yeah, she does like to teleport sometimes...

 

[SigilFey]

Sometimes she needs to take of horse business.

Don't ask her about her business, Hay. Don't ever ask her about her business!

 

[slothman32]

I noticed that too.
I wonder why it is that location.
Maybe they are default x,y coords.