Prajna is a mare, which makes her a
her.
"Steed" works, since it doesn't specify gender anymore. It arose from "stud" and its archaic definition implies a male horse, but now it is simply a horse, especially a spirited one.
I'm a little OCD about pronouns sometimes... and verb agreement... and....
OK. So I promise I won't post in grammar-nazi mode for at least another 2 pages.
EDIT:
The spot checks are alternating between the house and the surrounding forest. It takes a standard action to keep detect evil up and running, and a move action to actively use the spot check, which is why only every other round. The "filler" rounds are spent moving.