There was a thread here some time ago in which someone said that you shouldn't soak kibble that has citric acid in it because it increases the risk of bloat but I haven't been able to find any information on that. And of course soaking the kibble allows bacteria to start growing on it if it's left for any length of time.
If Brandi isn't doing well on the rice, then maybe the potato will do better for her. Did your vet ever test her stool for bacteria? Maybe the antibiotic they've got her on isn't effective against whatever bacteria is there (if it is infection related)? Hopefully she'll get past this soon!
Livin in a Newfie Drool Zone