At first, upon learning Emily had become a cat-girl, like you, you froze, not knowing what you were supposed to say or do. After some time, you simply asked the nurse if you could see your friend, and got escorted to her room.
Once inside you saw Emily sleeping in a tight ball, a pose only a cat could, something she often mock-complained to you about. Looking at her more precisely you saw her long, flowing red hairs were now in two tones, forming stripes, like the fur on the two triangular ears on top of her head, or on that tails she hugged like some sort of security blanket. Emily had also grown some whiskers.
Not wanting to wake-up your best friend, you got on a nearby chair and curled up in a position similar to her own, taking your own cat-nap.