Firstly, you are not Michael. Secondly, it is good to not over react to your birds bite, but there is a world of difference between reacting and over reacting. The over reacting will lead to the encouraging of the aggressive behavior (biting), whereas just reacting will not.
You have obviously made some pretty serious mistakes with your bird and as a result your bird does not trust you. You are going to have to start all over from the beginning if you hope to gain her trust and have her bond with you. And there can not be any trying to force your bird to do anything at all. That in itself has been one of your biggest and most serious mistakes.
Clipping your bird will do absolutely nothing beneficial for your bird and there is no problem that you have that can actually be solved by clipping her wings. You did good there.
Now then, I have asked you to tell me the birds routine and diet information twice in this thread and am doing so again as it is very important to what is happening with your bird, if that were not the case then I would not ask for it.
What time does Yui, get up and go to bed. We have established that she gets up at around 5 am and goes to bed somewhere between 10 pm or later. This is really bad for your bird as she needs to get up and go to bed with the sun. She needs to be placed where she can get the light from the twilight periods of dawn and dusk. This is how they set and reset their biological clock to synchronize with the seasons. This is very important as if they live on a human light schedule their endocrine system will secrete the sex hormones all year. When this happens to a bird its sex organs enlarge and keep enlarging and cause a tremendous amount of pain, constant, unavoidable intense pain, until the pressure build up to the point of rupturing something and the bird dies in agony. Don't take my word for this fact, do your research. This dependency on light is called photoperiodism, start there.
I asked for dietary information and I have received that she get some unnamed vegetables after your shower and that she eats seeds and only picks certain ones out to eat. When does she get breakfast and dinner? What exactly does she get to eat at these times and what if anything does she have for all day long nibbleing on?
This is also important as food is also one of the triggers that send and keep a bird in their breeding cycle, this is controlled by having an abundance of food as well as the type of food that they have as a diet that has too much protein and fat keeps them producing the hormones that are triggered by the photoperiodism factor and these hormones also have the added effect in increasing the birds aggression.
Petting a bird is a tough one to have to deal with as we all love the closeness and the beauty of these little winged wonders. But you must also understand that except for the beak, the head and the neck that the bird is one big erogenous zone and should not be petted or touched any more than needed for the birds welfare. To do other wise is to invite further disaster in the form of aggression as the petting of these inappropriate areas causes sexual excitement and as there is no release there is also no dissappation of the additional hormones released into their bloodstream by the petting.
A parrot in the wild is actually a pretty docile creature and is not prone to screaming, or biting, or feather plucking or self mutilation. These are all troubles that we have brought on to the birds by our lack of understanding of their physiology and their psychology. We are predators and we live in a dominance based heirarchial society, this is not the case with parrots and our social structure simply will not work for them. They are not capable of conforming to it at all, so you need to develop a different way of viewing the world to be successful with the keeping and maintaining of a healthy and well adjusted bird. A bird lives in a flock oriented social structure where each individual member is responsible for itself and makes it own decisions on how to react or act in any given circumstance, they band together and form strong bonds with the flock for the purpose of avoiding predators. Watch a flock of birds and the ones that are on the outer edges keep watch for danger, they also periodically exchange places with those on the inner portions so that they all get to eat and drink and relax while their place on the outside is taken by some other member. In their world being alone is the same as a death sentence and so they call out to their mate and to the rest of the flock if they find themselves alone, so that they can find their way back to them. Not a single bird is ever required to do anything that they do not want to do.
Are you beginning to see and understand the differences? Can you see what it is that you are doing to cause your problems with your bird and why it is acting this way?