person A: My daughter's chihuahua mix was diagnosed with an auto-immune disease when she was just a puppy.
person B: Oh no_comma_ poor little thing.
person A: Yea_comma_ it was hard to deal with_comma_ but she had a really good life.  She passed away at age 6 this past February though.
person B: I am so heartbroken thinking about it.  I'm sorry.