"Sophie's"

I've known of three "Sophie's" in my life: Sophie, a dog I met on my walk today;

Sophie, my friend Justyna's dog. That's Soph waiting for Momma to come home; and finally, Sophie Sweet. Well - I don't actually know Sophie Sweet. I know of her. She's an actress - of sorts.

"Where's my baby?! Where is she? Come on! Come on, Sophie! Come get the bone! COME ON!" What? I'm talking to the dog.