I've been through animal death before. It's never easy. When Onyx died, it was tough. I missed her. But I also had Lily to help me through it. Lily changed after Onyx died. She became the cuddly, lap cat, I always wanted. She rarely left my side. My bond to Lily grew way more in those 4 short years.
Cavey, my other cat, is sweet. But it's not the same.