My sympathies. I know how it feels to lose a pet you care about. In particular, when my ex and I lost an extremely precocious tabby, we were both devastated. She couldn't even function for a few weeks. He was a very unique cat.
I know how you feel. I was the same for weeks on end after my cat died. Yet, we have the vdams doing house remodeling, selling/ buying cars, etc. all during the loss of their daughter. I was so upset over my Maine Coon's death, it was all I could do to go to the grocery store every 2 weeks for the longest time.