Yes, she misses you. I had a boyfriend who said that dogs have no concept of time and do not "miss" people. Yeah, they do. When my son and his wife left their dog with me when living in a motel for three months in a distant town (my daughter-in-law was training to be a restaurant manager), he sat by the window for the first month, looking out at the driveway. He stopped looking out the window when I moved, not because he stopped missing them.

They miss you, they dream about you in fact. #ScienceYo

Dogs are pack animals. They hate being alone & will develop abarent behavior is isolated muchly. ie the chained backyard dog that barks inscesantly. "Please don't leave me" those eyes are saying. Revel.

I am out of town right now. My corgi caretaker says the run to greet him and do their usual frenzy play fight version of their greeting to me until they realize I am not there. THen they just say ,"meh" and walk away. I miss the little buggers

They miss us, my cat comes running to the door when I come home meowing her head off, and following me everywhere I go in the house.
So, yeah, they most definitely do miss us when we're gone.