Food insecurity

For starters, the vets have not medically found anything wrong with my cat. I believe she’s expressing food insecurity by peeing on furniture. At first we didn’t understand why she kept peeing on our furniture but we’ve identified a pattern. If she is complaining for food and the bowl is empty, she will pee. I’ve continued to monitor and I believe this is what’s going on. Problem is, she’s nowhere near underfed. We’re not sure what to do to fix the behavior. Any advice is greatly appreciated.