Surely if you explain to Squeak that he losts his little brother she would soften up.
I'm not so sure she would. She can be very hateful sometimes. She used to torment Ellie, and he was seven when we found her. He was a very calm kitty, so he never tried to hurt her. If she had his personality, there would be no question! I would have to kitten proof my home. I can just see my leather furniture with those little sharp claws!