Naatkinson says:
Ahh, I wasn't sure I could get there by doing a diagonal move, but I would have done it anyway. Just want to make sure you took the blindness/dazzle into account, since I cast the spell before moving.
Oh, well, let me roll the miss chance for the 2nd one right now then, maybe your horse won't get hit after all. And yes, if you have a mount or an animal companion, please note the stats for it somewhere on your character sheet.
Edit: The zombie would have missed your horse.