When my babies have had diarrea,Iv given them boiled white rice with boiled chicken breast (more rice than chicken) just chop up the chiken breast REAL small.The rice works for diarrea and you only have to give them very small amounts as rice is very filling.
Last week Jess (my 10 month old) had diarrea after getting into our trash can (yet again) and eating lasagna..so I gave her the boiled rice and chicken for a day,and it cleared up in no time.I gave her very small amounts throughout the day (every 3 hours).If your vet has asked you not to feed her for a couple of hours,just keep some nutrical handy
Although if its only a couple of hours Im sure sheŽll be fine
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I hope shes better soon..GOOD LUCK!