system
guilty: I felt so bad when I had to board my dog while I was on vacation. 
gpt
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! 
human
Aww, I know that can be hard, but you can't be too hard on yourself.  Sometimes you don't have a choice.
gpt
I know. She was so excited when we came home though which made us feel a bit better. 
human
Absence makes the heart grow fonder.