Oh Gosh, I can't believe this. I've just had a message on FB from Terry's daughter. I will just copy paste, as this is all I know:

I just wanted to let you know that my mom passed away yesterday. During her knee replacement surgery on Friday, she went into cardiac arrest, then into a coma and never came back to us. Thank you for your friendship with her. If you don't mind, can you please let her Pet Talk friends know? Thanks again. Take care.

I have written back w/ sympathy, and asked about the dogs, and if we can send cards (those of us who wish to) and where. Will post as I get more info.