Hi,
I know exactly how your daughter feels. My Dad's male y/n attacked & bit my left finger so bad it required a plastic surgeon. He's still alive & with my Dad over 25+ years. It took place when I was a child. Give your daughter a big hug from me as she may likely feel they way I did - very, very afraid. It will take time but if you read up on amazon behavior & explain in to her you will help her get over this. By the way Joannie Doss has some excellent articles that weren't available when I was growing up in the early 80's.
Honestly, you need to be very careful with your daughter. I would not allow him out when she is around. They can be downright dangerous when they are hormonal. I am well into adult hood now but I still need to conjure up "nerves of steel" when I handle him.
Not all but some go into a "blind rage" meaning they have hormones which take over their personality. Jekyll & Hyde so to speak. It doesn't mean your fostering parrot hates her just that she must be careful and by the way so do you. If you need to use a step up stick & be wary of your face. I always make sure he's on a stick lowered to my waist. Sometimes keeping my head slightly turned with one of my eyes square on him. Why because I can't tell you how many times he's tried to jump up to remove my nose during breeding season.. maybe he thinks I need a nose job...
In time she'll love & accept an Amazon for what they are - I do... So much so that when my father passes he will return home to that little 10 yr old girl he knew a long time ago..