Blast,

All sympathies to the DW and you. Having a lawn sprinkled with the graves of a number beloved felines my DW and I share your pain. But I would wait a bit before adding a new cat to the family so the new member of your family can be his or her own "person".

I make this suggestion with all due respect and based on some personal experience.
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In a crisis one does not rise to one's level of expectations but rather falls to one's level of training.