Awww! I know the feeling! We gave in. The one time we tried to leave KS alone to go to the grocery store, we couldn't take those sad barks. She has never been left alone for more than 5 minutes I guess. If we have to go where she can't go and it's for a long time, she goes to day care. My parents have babysat too. She is spoiled rotten I know!
I hope your little one has a good day!