I think she just doesn't know what to do with herself when you are gone. While being home all the time is theoretically a great thing, the dogs learn that you are always there to guide them in decisions. Then when you aren't, they don't know what to do, and you can get these behaviors.
I have personally have had very few of these issues, but I work full time, and I crate the younger dogs during the day. They know that is their job, to chill out and have a nap. They don't have to worry about what they are doing, they don't learn to get into trouble. Then when they are older, I leave them out, and those habits they learned as puppies (the chilling out part) stick, and I have adults that sleep during the day. I occasionally lose something, but it's never major, it's usually the result of someone being rambunctious rather than stressed.
The one exception is my silly Collie. Same thing, crated as a puppy, then allowed loose as an adult. Then she started to stress about being loose, and she started to tear up chairs and rearrange furniture. She is now crated about half the time when I am gone. She is having to relearn the "chill out" thing.
The dogs are all loose at night, and two of them are crated during the day. One is crated for stress relief, one because it keeps him apart from the older male.
I have a friend who refuses to crate her dogs in the house also. So when she takes her dogs to shows, or rides in my car (where all dogs are crated), they are a mess. They whine and carry on, it makes me crazy.
But yes, you need to restrict her to a space where she is comfortable. Whether that is a crate, an ex-pen, a room, whatever. Right now, it's too much.
Remember....dogs think very differently than people.
