If whining is the only symptom, I wouldn't worry too much. I'd still get a good once over at the vet and explain the behavior.
Her world has been shaken up a lot lately. Take it slow and make it fun. Lots of rewards for good behavior. Lots of "good girl" when she's doing something you like. She is probably very insecure about her new surroundings and could use your help figuring out what to do and when to do it. Food treats are great, if she will take them, because eating is incompatible with fear.
If you feel up to it, feeding her through marker training will help solve a lot of problems and help build a bond.
I'm sure you will get some great advice. There are plenty of foster and rescue people here.
When a dog saves the life of a man, it becomes clear that partnership knows no bounds.
Fama - T.E.D.D. OEF XI-XII (GSD)
Marshall - T.E.D.D. OEF XII-XIII (Lab)
Lucian - Med Alert (Cane Corso)
Pud - the old man (Pit x Lab)