Cat dog thing you can go here for more tips
Introducing Shepherd to cats
You still need to bond with this dog if shes following you around she might be a little stressed? Big change so give her a little time to settle in more down time quite time in her new home.
They can also be a little growlie, All the ones I've know have been way, way more growlie/talkie than any other dog I've had. Lots of my friends had them.
I find them a lot easier to get used to than a GSD myself. I find them to be a bit more laid back in comparison.
Your a good friend!