hey, nik! :--)
she definitely has Siberian ancestry, but the other breed(s) would have to include a drop-eared dog;
a Sibe x GSD would have prick-ears, as both parent breeds do.
the easiest way to answer this is a blood-test or saliva test for breed markers -
about 40 to 60 bucks. this CAN be helpful as some breeds have drug sensitivities and other breed-specific health concerns, so it is not just a game, but can be a useful diagnostic or preventive step.
she is a very handsome girl -
but if the 3rd picture, in the yard with the bare shrubs + car behind her, is her Most Recent photo, she could peel off a few pounds; one of the pictures with her SITTING may indicate a poor knee-joint (right-rear), and extra weight is anathema to ANY joint issue.
that standing shot in the yard, look along her near side, from shoulders to butt; her loin area between end-of-ribs and rear legs is as straight as a pipe --- she should have a very-distinct waist, seen from above or the side.
above =
||-ribs--||
x)waist (
(--butt--)
lean-dogs live longer, and have much happier, more-active lives!
cheers,
--- terry