OK. The very first thing you need to do is to change her diet because what she is eating now will not only kill her (she most likely already has advanced liver damage -more on that below) but is also part of what is making her aggressive. Female amazons that are not overly-hormonal are never aggressive, quite the contrary, they are calm and affectionate. My very first rescue was a female redlored amazon and she was given up because of aggression but, once her endocrine system was back on track and attuned to the seasons, she turned into a sweetheart (I had to put her down due to bone cancer in both her legs). She was so mean, she used to hang on to the edge of her cage door and stretch her entire body out so she could bite you as you were walking by
So, first order of business is to put her on a fresh food diet with supplements to cleanse her liver and kidneys because free-feeding them protein food (nutriberries, seeds, nuts, etc) gives them high uric acid (which makes crystals and stones in their kidneys and joints) and fatty nodules in their liver (hepatic lipidosis - aka fatty liver disease). Make her a simple grain gloop with the grains cooked at a hard al dente (bring them to a boil and allow them to simmer for not more than 20 minutes). Do not add any veggies to the mix (use oat groats, kamut, hulled barley, spelt, wheat kernels) until she is eating the grains. Take out her seed/nut and her water dish at night, after she goes to sleep and, at dawn (and it does have to be at dawn, I am sorry to say), replace them with medicated water as follows: 3/4 spring water, 1/4 organic aloe vera juice from the inner filet -not gel and not from the entire leaf with a double dosage of a good vitamin/mineral supplement (she has not been getting any vitamins, right? - get the kind that is a powder soluble in water, I use ABBA 2000). And put the grain mix in her bowl with a little bit of a good quality budgie seed mix mixed in as well as one capsule of each of the following: milk thistle (250 mg kind), dandelion root and methionine - you can also add some spices to it to make it more attractive: the smallest sprinkle of cinnamon, chili powder, red pepper flakes, etc.
She most likely will only eat the seed for the first two days or so but she will start eating the grains soon after and you will know because you will find something that looks like empty white 'skins'. Once she goes for the gloop as soon as you put it in and eats the grains, discontinue the seeds and start adding veggies to it. Start with corn (they all ADORE corn!), then peas (another favorite), then diced carrots, then chopped broccoli, etc until you are serving the whole recipe (you will find several in the diet section). Also offer her raw produce because she desperately needs the phytonutrients in them... my zons favorites are apples, grapes, mangoes, cantaloupes, carrots, corn on the cob, red Swiss chard, romaine hearts, bok choy, pears, etc. Eat a piece of fruit in front of her without offering any but put a piece of your own fruit (from the other side where you are not biting so no human mouth bacteria goes on it) in front of her and make yummy noises. It takes time but if you are consistent and persistent, she will start eating some and, as time goes by, her range will increase (amazons are VERY good eaters of produce). You should also make her a nice, healthy birdy bread (with veggies and fruits in it) instead of giving her human bread (all cereal products manufactured for human consumption have too much iron for birds - and excess iron is also stored in the liver - VERY unhealthy for them!). If you don't have a bread machine, I recommend you get one because it's super easy to make bird for them in one - I put everything in it at night before I go to sleep and in the morning, the birds have fresh birdy bread for breakfast. And the best thing is that they love it regardless of how it comes out! Too dense? No problem! Too dry? No problem! Too moist? No problem!
Also, make sure she is kept at a strict solar schedule with exposure to dawn and dusk without any artificial lights on because although they are now in breeding season, they will stop producing sexual hormones once they go into molt -which happens in the summer.
As to how to make her stop biting one of you when both are in the room... well, actually, it will happen on its own once she stops producing sexual hormones but, in the meantime, no PDAs in front of her and do not interact with her physically (meaning, no stepping up to a hand, and keep a distance between you and her as well as an eye if she flies well). Go about your business in a nonchalant manner but do talk and sing to her (they LOVE music and, if you pay attention, she will let you know what kind she prefers) and, if you see she is getting 'hot under the collar' (her body will be tense, she will lean forward and keep her eyes on you and her eyes will pin), give her a nice cool bath with a spray bottle - amazons love baths and they are a great way of 'bringing the heat down' when they are hormonal. And always, always, always keep a good perching stick handy (I use a long dowel to 'ward off' attacks during breeding season).