Kain had a good idea of what Edge might think about the manner... and hated the fact that he would be right. Not that Kain wanted Cecil to be gone entirely, but... well... this did end discussion of the wedding for now. Even though at the same time he felt guilty, for Rosa's sake...

"I doubt he would have had much left to deal with..." As guilty as it made him feel to think this way, it also made him seem like he'd somehow done much better than Cecil just for the fact of being there.