The lady you got her from might be mistaken about the mix. Among novice horse people, lots will tell you that their horse is 16'2"hh (sixteen-two-hands high. This MEANS that they measure 5'6" at the shoulder and are pretty tall. Then, you go to look at their...pony
I'm am sure that you will enjoy your puppy and train her well.
Oh, MAN.....she is SSSSSSSSSSSOOOOOOOOOO CCCUUUUTTE

(couldn't help it--I love puppies)
Your Vet should be able to confirm her lineage by her bone structure. Wolves have a different bone structure from the domesticated dog and the wolf bones will probably dominate.
IF, she is mostly GS, I am sssooooo jealous. I STILL miss my GS/Collie cross, who died last year

....at age 10 (life is SO unfair.)
P. S. Don't tell my dogs, Rose and Pyma that I wrote this. Rose will be offended and Pyg will cry.