Both our girls were spayed last year and both of them came home straightaway.Sass was absolutely fine,just quiet that night and pretty much her normal self the very next day!We had a real job stopping her from playing with the others and as she was not allowed off lead for 2 weeks,she was bouncing off the walls !.No pain relief required! Mystie had a bleed during the op,which was more than usual,and she was very quiet over the weekend,but by Monday she was fine.Again no other pain relief required.Hope all goes well with her when you pick her up tomorrow.