I had to look that up to be honest. I had no clue it was called that. I've cut through there before as my friend lived right near there but I had no clue that it had a name. Not sure why it is called that but there are no horses or horse tracks any where near there. (maybe back in the day but now its right in the middle of the city)
And I have no idea how I'd even begin to get a description of the victim tbh as her name etc hasn't been released to the public.
I found this site http://goodnightraleigh.com/2008/03/horse-track-alley/ which explains that it was probably named as a nod to the old fairgrounds racetrack that I guess doesnt exist anymore? So, no ties to Mickey and her horses.