I just brought home a four month old Shepherd/Lab mix last night. She has spent her whole life in a rescue. I am prepared to give her time to adapt and accept this is not temporary. However, I don't want to encourage bad habits. She currently hates her leash and refuses to move. I don't want to drag her outside but I also don't want her to think I will carry her everywhere forever. This is my first puppy. I have always adopted older dogs and I am worried that I am screwing up. Help?