Hi Martha! I bet Sadie is super cute. If she food motivated that is a good way to get her to focus and listen to you. A puppy training class might be helpful to you, it teaches you all the basics you will need to know to get her started on good behavior.
This ASPCA site has super helpful info too http://www.aspca.org/Pet-care/virtu...rticles/teaching-your-dog-to-come-when-called
This ASPCA site has super helpful info too http://www.aspca.org/Pet-care/virtu...rticles/teaching-your-dog-to-come-when-called