Vicks on electrical cords works great! You have to re-apply often, but may save her life if she is a cord-chewer.
Good luck! Kongs are very tough too.
My husband used an unorthodox approach, he bought Nicky (not a pup but still a chewer) a used 'high quality brand name' purse at a yard sale for a couple of bucks. When he brought it home I said, I don't need that and he said "It's not for YOU" and handed it to Nicky. She was so proud and strutted around with her purse, which she proceeded to settle down to chew. That was over a year ago and there is still a big piece of it which she grabs and chews from time to time. Not saying my purse wouldn't be in danger if I left it out, but she is happy to have her own to chew.
A pup is too young to understand 'my shoe vs. your shoe' but giving Nicky her own things has helped us.