Don't worry, she will eat solids when she is ready. keep giving her soup and mush full of nutrients and offer her some minced chicken or liver everyt wo or three days. She will eventually get the idea. I wouldn't let her sleep beyond 3 hours before feeding her - cats can get to sleep again very quickly, and it you lose too much time eventually she will be missing meals. Perhaps at night let her go longer so she gets the idea that night is for sleeping.