Welcome, Lagerlot and Lilly, to the forum! I am afraid that you rushed things a bit and, when it comes to amazons [or any other large bird] that is not advisable. Let me explain. Parrots actually take a long time to bond with a new human. They are not like dogs which are hard-wired for subservience and have been bred for thousands of generations to depend on man. They are also much smarter than dogs so where you can trick a dog into liking you real easy, you can't trick a parrot, you need to earn their love and this takes a long time. So I suggest you go back to square one. It won't be easy because you and your daughter already set a bad precedent but it can be done if you are persistent and consistent about it.
First thing you need to do is make sure the bird is not overly hormonal [because this always means HIGH aggression - especially with amazons and most especially with the 'hot three' species which your bird belongs to] so a super strict solar schedule with full exposure [meaning, at the very least, 1.5 hours of it!] to dawn and dusk and a fresh food diet with protein food only for dinner is essential. A good quality full spectrum light [CRI 94 plus and Ktemp 5000 - 5500] will help a lot because it will allow her to produce good levels of the happy and reward hormones which influence their moods same as they do for people. This is not going to change anything overnight, especially if the bird has been kept on a human light schedule with free-fed high protein food [seeds, nuts, pellets, nutriberries, avicakes] because a screwed-up endocrine system doesn't revert to one in tune with the season after a week or so of the right treatment. The longer the bird has been kept at a bad diet and bad light schedule, the longer it will take for her endocrine system to go back to what it's supposed to be.
Now, interactions... I never recommend physical interaction for the first two weeks - as a matter of fact, I do not interact AT ALL with my new birds until they make the first step. Sometimes it takes months for this to happen but, when it does, it's always without any kind of aggression from the bird because, by then, it realized that I can be trusted and that I respect his space and 'person'
and is used to the always unchanging daily routine [a super important part of getting a long term good relationship with them!]. The only thing I do is open their cage door at dawn and walk away - if the bird wants to come out, it can - and, if it doesn't, it's fine, too! I talk to them [a praise phrase or two, always said in a high voice and a singsong works wonders with them], I put the radio on and sing with it, I interact with the other birds if they want it but, when it comes to the new birds, I never get in 'their faces' or ask for anything. I offer them a high value item [always a high protein food item which they do not get during the day unless it's from my hand] every now and then -not all the time, either, maybe two or three times during the day- but, if they don't take it, I just leave it where they can see and reach it because although the same high value item can and, most likely, will become a reward, during this time it's just a gift, a token of friendship freely given.
So, if I were you, I would go back to square one and eliminate the physical interaction so as to give the bird time for its hormones to calm down [this is the perfect time to do this because the days are getting shorter], to have enough time to 'study' its human[s] and make its own conclusions, to get used to the daily routine and for it to decide when to make the first step. The other very important reason why you should eliminate physical interaction is that you do not want the bird to get used to biting you and, every chance you give it becomes a reinforcement of an aberrant behavior which needs to be eradicated. Parrots are not naturally aggressive animals. They are not predators and they don't belong in hierarchical societies so aggression is not a hard-wired trait in them. In the wild -and under ideal circumstances in captivity- it's only used for protection and defense but, because most people treat parrots as dogs with feathers, expecting obedience, submission and respect for authority from them, they learn to bite in order to get their point across so, to them, aggression is not instinctual but a learned habit. A habit that needs to be broken by never giving them reason to bite while giving them every reason to trust us.
Once the bird 'calms down', you can start target training it so it gets used to interacting with you and receiving praise and rewards BUT do not rush it, it will take a couple of months for this to happen. In the meantime, enjoy the bird's company and show her she can trust you. This time is the foundation of your relationship with Lilly so make sure the foundation is strong and on firm grounds before you start to build on it.
PS Taking into consideration this is an 'older' amazon, I strongly recommend you take her to an avian vet for a completely check up with blood work, including bile acids (amazons are highly prone to fatty liver disease and ALL the old ones have it to a certain extent which is something you need to know because they require a special diet and supplements]. I would also have it DNAd to know the gender for sure because females need more calcium than males and males are highly aggressive during breeding season which are two things you need to be prepared for.