Oh Eric, I am so sorry that you're having to deal with losing Sheba so soon after Freddy went off to the Rainbow Bridge. Just isn't fair. Doubly hard for you since Sheba was your mother's cat. I hope you and Sheba have some quality time together this weekend. Perhaps you will get very lucky -- luck I've never had to date -- and Sheba will die in her sleep.
Thoughts and prayers are with you.

on a happy note it is great to hear that Puddy is getting over her shyness. Is she with you, someone else, or still alone in the house?