person A: I felt so bad when I had to board my dog while I was on vacation. It made me feel like a bad dog mom! 
person B: Aww_comma_ I know that can be hard_comma_ but you can't be too hard on yourself.  Sometimes you don't have a choice.
person A: I know. She was so excited when we came home though which made us feel a bit better. 
person B: Absence makes the heart grow fonder.