When she finally looked up, we could actually see the look of panic -- they're gone. they've left me. i'm all alone. But, by the end of the walk, Sasha was pretty confident there wasn't going to be any abandonment, and began to be more independent. As in, more runty. Cleo also clued in, and you could tell she was torn between hanging with the rebel Sasha or being a good heeling pug.
Look at the indecision in that one raised paw.