Thanks to everyone for all the input.
After reading all the great replies and advice, and before I was able to approach this situation, I had to give myself a few days to get over the mental state of fear and anxiety I had managed to work myself into.
Birdman666, you were 100% on the money. Yesterday, after meeting Mr. (thick) Towel, and a quick trip to the floor, Millie had a sudden change of attitude. Once she understood who was queen of the flock, her behavior quickly changed. She spent the day with me enjoying her swing, eating scrambled eggs and taking a shower, with no attempts at biting or lunging. She pushed my hand away when I attempted to touch her head, but I was okay with that, for now. Today, she was back to her talkative typical self using words, phrases and singing songs I hadn't heard in several weeks. I didn't realize how intuitive she is; or is it all Macaws? or all birds? I don't know, but I know this bird can read me like a book. The slightest reluctance, fear, or hesitation on my part and I'm dead meat. I've got to work on that some more. I'm not a timid person by nature, but I do have a healthy respect for her beak, now that I know what it can do but I can't allow myself to let that respect develop into fear. So, anyway, We're back on track for now. I will look for the posts on beak pressure training? I think that might be helpful. BTW, Millie is a Miligold Macaw. Happy Hatchday to Millie! She turns 3 today. She speaks both Spanish and English. When she came to me, she was already speaking Spanish, so I take no credit for teacher her that. She has a pretty good vocabulary. She says: Hello, Hi, What's the matter? Go out? Mmm, that's good! What's that?, Crackers and Bed, You want that? Shut up! <from me yelling at the dogs barking, ugh! and a few more. What's funny is last year on her birthday, we gave her a little party. We all gathered around and sang Happy Birthday to her. Since then, she has been singing "Happy Birthday to You", all year long. I'm amazed she picked that up with only one opportunity hearing it. She started singing it the very next day..lol. I guess she's just like a kid who wants everyday to be their birthday. This year she'll be singing along with the rest of us. Thanks again for all the help.

Torrie & Millie