My dutchie also took time... time to bond and really trust me. That was hard as I just said good-bye to my two Aussie companions that were such loves. But Tygo and I work hard at it and starting about 10 months old I started to see a change. Now at a year old he has a very sweet side. Just keep working with her in a fair and consistent way (and keep holding the chew toy!!!!), it will come.
Dutch Shepherd - Ptygo (Tee-Go) de las Flores
Rescue GSD - Freyja (Husband's Dog)