system
sad: My sister's cat got sick and had to be put down last week. Feels bad. I'd known the cat for 14 years and was always her favourite person
gpt
My sister's cat got sick and had to be put down last week. Feels bad.
gpt
That sounds terrible. But hopefully it isnt suffering any more. 
gpt
She had stomach cancer, so she was in a lot of pain. Definitely the right thing to do
gpt
I agree, just remember her for all the good memories. 