I thought I'd chime in again to let you know that I tried again, and everything seems to be working perfectly now! Thank you so much for your help! It must've just been a simple typing error that I couldn't spot in my tired state last night as you suggested. I only touched the races and descriptions gd files again because I'm not really interested in seeing sheep anywhere else in the game world. The only reason I started messing about with this was because I wanted Ancilla from Monster Girl Dreams as my starting servant lol.
I'm not really interested in giving her a special power either, well, I don't even know how the abilities are given out so I just copied the fairy's ability (the description) for my sheep because it "doubles the daily base stress dissipation" and I feel that would work we'll for a fluffy, cuddly sheep lol. Not to mention one of the options with Ancilla in MGD is actually just to relax with her. So again, thanks a bunch!
P.S - is it fine to keep playing on the debug version of the exe or should I switch back to the normal exe? Thanks again.