Hello Stars_Bright - a very warm and welcoming Hello to you, Millie and Comet
How wonderful that you've given your two babies such a lovely home. I', sure they will help to bridge the gap os losing your lovely tortoiseshell girl, and I daresay your Yorkie is delighted to be sharig his home again with feline companions.
Millie is teaching Comet what is acceptable and what isn't and the eye incident has been an unfortunate accident. But of course hoping that his poorly eye improves steadily and quickly - doesnt sound like it's holding him back to be honest
Also sending positive thoughts for Millie's tummy troubles.
Welcome to Purrs, and I hope you find all sorts of useful things here and make new friends.
I would take lots of photos of them especially whilst Comet is a kitten. It will give you lovely memories to look back on. (And we love piccies here - hint hint