Interesting! Just out of curiosity, had you tried slippery elm (and it didn't work)?
No, I didn't. Something I read on Little Big Cat made me nix the idea.
Miralax worked when needed. She didn't need it very often. For example, one source we buy from tends to have a higher bone content in
some of their grinds. I would add Miralax when feeding those particular grinds.
I also started feeding some commercial boneless grinds, because it is easier and added something different to the rotation. Sometimes changes were made just to be made, but also just happened to help with poo issues.
Some details that I left out of my original post...
There were two days of Lucy barfing up her meals. (For the record, I took her to the vet on day
2!) Back to the details... She wanted to eat and did eat, but the food wouldn't stay down. We assumed nothing was wrong with the food, because 5 others had no issues.
After lunch on day two, Lucy pooped (
or tried to) in front of me. That is when the lightbulb went off... she can't poop, so she can't hold food down. To keep it simple...What she was being fed for two days was normally "no poo issue" food.
The vet gave her a pretty good once over. He didn't
think she was full of poo. Nothing against the vet, but to be sure... I asked that an x-ray be done. No poo. No blockage. That is when the vet decided she needed pushing and mucus help. Knowing what she had been eating, others not being sick, yadda, yadda, yadda... his explanation sounded reasonable.
Time will tell.