When I was a teenager I had two cats that hated each other
You don't blame yourself for them not getting along do you?
Yes, I think I should have done more.
It isn't your fault that your cats didn't get along, because sometimes animals just don't like each other. You shouldn't beat yourself up over it because it doesn't help anything.
I won't. I'm going to go to sleep, goodnight.
I'm glad to hear you aren't needlessly blaming yourself. Sweet dreams!