Wirelessly posted (BlackBerry9700/5.0.0.593 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/114)
Did she talked with German authorities about keeping her US citizenship? If Germans can take the US citizenship and keeping their German one it might work the other way around, too. But I wouldn't tell the authorities about the payment because this could have negative influence. Also being a Beamter has many more benefits than just payment.