Shawn,
I didn't mean to offend you. Look at it from my side. I have no history of your experience with Boxers. I only know that your 4 month old puppy couldn't make it all night without peeing in her crate, so you consigned her to be an outside dog. That is unreasonable to me and suggests that you are not aware of the needs of a Boxer. I was not being quick to tell you to get rid of the dog - she's been outside for 8 months, which tells me you had no plans to bring her back inside.
Please rememeber that this is the Internet, and facial expressions, intonations, etc. are not available. I have only what I am told to form an opinion, and if I don't have the whole story I do not know it.
Enough about that. Regardless of where you live, I still stand by my position that Boxers are not meant to be outside dogs. The lack of coat is only one reason, as you yourself said they thrive on constant attention. They need to be part of the family, not something that is kept in the backyard and is only a part of the family when it's convenient for you to be out there with her.
As for the digging, fill in the holes most of the way, put some of her feces into the hole and then cover it. This will usually stop the digging - in that spot. You will aslo need to set aside an area where she *can* dig, and if you catch her digging in the yard, tell her NO, move her to her spot and praise her for digging there.
She also sounds like she could benefit from exercise. Having a yard to play in is great, but if she's out there alone she won't do much playing. Either run around with her back there, or take her on long (1 hour+) walks _daily_. A tired Boxer is a well-behaved Boxer, plus she'll be getting some good one-on-one interaction with you (or your kids - maybe a different person every day could take her for her walk).
If you're willing to bring her inside and keep her there, I'm thrilled. If she's going to be an outside dog she deserves a new home.
Julie