Since your only gone 4 hours it would be nothing to crate her so she could get a nice nap. Thats what she'll be doing anyway. Not only will your house be kept intact but your pup will be safe as well.
bubbles is a cute name...just wanted to say that
The advice given to me time and time again here was (and still is) "she's just a pup" she doesn't know any better and the training begins with you.