Hello and welcome to the forum. I am wondering if the vomiting maybe that her stomach is empty. This happened to my dog and a small snack a couple of hours before her evening feed sorted things out. I am guessing that the portion of Akela is smaller than the other food as it is richer. I would advise that you speak to a vet if it persists. It could also be that the food is a little rich for her and the portion size needs to be reduced further. The higher meat content foods do not suit all dogs. How are her stools since you changed ? If Daisy decides she isn't keen, there are lots of other foods you can try. It can be lots of trial and error.