She looks like a Sheba! My first-ever dog Sheba was a stray Shepherd mix, black and tan with those goofy tan spots for eyebrows! Your girl is littler, and the cute floppy ears are so sweet (my Sheba had stand-up ears), thank goodness you found her, hopefully before she got pregnant. A nice bath, flea powder and a collar ... then to the vet for a check-up ...

If I knew any dog-lovers out your way, I'd call 'em, but as I don't, try GSD rescue? She is small, but looks very Shepherd-ish to me! What part of Washington state are you in/near?