Oh Kelly, I'm so sorry to hear about Olivia - she looks like such a sweet girl.

I too think it would be best to isolate Olivia and give her extra love and attention. Could it be that she's sick? Cats often pick on sick cats, don't they? Or you could try giving Noah a mild tranquilizer for a little while. That may put a stop to the attacking and things get back to normal. Just an idea.

We'll be crossing our paws and fingers for you all.