The Kibble with warm water will upset her tummy less then canned food. Also, if you have some acidophilous/ probiotic, sprinkle a capsule on her watery kibble and mix it in. It will help her tummy settle. Human probiotic from the drugstore or GNC is fine, I use the human stuff for my furkids!
Painkillers can also cause tummy upset. Is she on antibiotics? That also causes tummy upset....Its a great sign she is taking kibble again!