I tried her on EVO, but it gave her diarrhea
The following is an excerpt from my Tips for Transitioning paper. It also applies to your situation when you are trying to slowly transition to canned but need to use low carb dry during the transition:
Some cats may experience softer stools during the transition. I do not worry if this happens and tend to
'ride it out'. If diarrhea results from the diet change you will either need to experiment with different
canned foods or slow the transition down and do it over a period of several weeks.
When cats develop diarrhea during a diet change, many people run back to dry food and abandon the
transition. However, that this is not a good answer. I have never encountered a cat that ‘needed’ dry food
for intestinal health. There has always been a healthier dietary solution.
Another complaint that I often hear is that cats often regurgitate their canned food shortly after ingesting
it. I confess that in the otherwise-healthy cat, I do not understand why cats do this. However, it is not an
uncommon complaint and I urge people to stay the course if the cat seems to be healthy otherwise. One
of my own cats did this a few times per week for many weeks after the transition – and then she stopped
doing it. I tried to tell her how expensive the food was – and to please stop doing that, especially on
carpet - but she ignored me.