Unconditional love: she came to her name, she greeted her 'owners' as they reached out to pat her. She trusted them - unconditionally.
Conditional love (love?): she was no longer small enough to be kept as a 'pet' and is now sitting in their freezer. And they still consider themselves animal lovers, because "she had a good life while she was alive"!!!.
In my eyes this does NOT make it OK.