Agilityk9trainer- icons are a dead giveaway and pictures here.. lol..
Let me add a few points- you said you were bathing her weekly as your mother said she sheds too much- that can make the hair follicles allow the coat to shed more. Maybe just one every 3 weeks - . It would be better to brush her daily than to over bathe her.
Also- she is bored and isolated- left to her own little world. Like you would be if you were locked in a room and could not get out much. Although you feel she is " in the house" really its no different than left outside- she still doesnt have any interaction with people needed to help her get over being " so protective" or scared from lack of human contact. If she were not aggressive and had not bitten so many people I would suggest walking her to get her and about- BUT YOU CANT TAKE HER OUT for a walk in public with this behavior. She does need a behaviorist or trainer- but she also needs stimulation. Maybe playing with her more in the basement even.. It appears to me she is totally confused on how to get the attention she so desperately wants- the jumping up etc. With only a concret floor and a few items of "junk" it must feel like a prison to her.
Some obedience class trainers will take a dog into their class with aggression problems if they think they can handle the dog. But first we need to get her on a more controlled level- and a trainer or behaviorist should be the first step. Lack of getting out ALOT when puppies, out and about, in dog classes etc at a young age is usually the core to set the behaviors in motion. I take my pups to class all the time- even though I even teach classes- the reason- GET THEM OUT AND ABOUT with other people and dogs. Training in a group does more to socialize a dog than training at home especially with puppies. I even take my show dog pups to 'handling' class although I am already training them for show- same reasons- to get out around other people and dogs and get use to the "scene of a dog show".. I know she isnt a puppy anymore- but mentally- in a way she is- only now as an adult its going to be harder to fix- ..
Your dog seems terribly lonely- and even a person would " go nuts" left to " solitary confinement" for enough length of time.
Do you have a fenced in yard she could run safely- maybe you could play ball with her etc. Open up her world a little bit.