One more thing, "action-reaction" is one of the basic laws in our Universe. Keep positive attitude, be hopeful and things may turn around. They usually do. Maybe not hearing back from the vet after Bertha pulled her tube out was a blessing?... I'm not sure if I'd go as far as tube feeding myself. Some animals (just like us, humans) are born less strong/healthy than others and some illnesses can hit very hard even the strongest. It sounds like you trust your vet and I'm sure you had that discussion with her. I'm just being devil's advocate here, saying that perhaps Bertha's pulling her tube out was a blessing?... Just thinking about "action-reaction", man! that is so true with invasive medical procedures! It's at times like opening Pandora's box! I so hope that Bertha is on a mend now.