They are birds, not machines... it is not: do not press button A -> activity N will not occur.
So your bird went straight from baby-behaviour to flirting/ inviting to mate.... did you teach her any other option (ways of interacting) in between?
Not saying she cannot possibly be a superhormonal pain in the butt!
(most growing up parrots are for a period of time, and some <like certain toos> are impossible as pets during that period)
A a human: it is no fun being treated as a sextoy.
not so domestic bliss here atm:
Japie is flying to my shoulders and panting and trying to regurge and if I let him he will go even more crazy and try to mount my head.
The one thing is to block that behaviour and only contact that silly bird when he is not overexited.
It just happens (?): a few minutes ago he was happy exploring the room and gnawing some cardboard while I was doing things (water, food, making tea) - and now I am typing he sees his chance...
so, is it him?
Or it is me standing still and making certain movements/ sounds etc. that trigger this behaviour?
So...I have to send him to his cage (inpromto training) / ignore it as long as he not on me...
(al the flying will 'cool him off' eventually, but it IS a pain in the neck!!)
He is like that most of the year, all the years I have had him.
I am sorry he feels that way- but I am not going to 'play along'/ let him get away with it and since he is a guy hormones are not available anyway...
He will switch back to 'normal cuddly parrot' sometime later and get scritches, a shower, another toy etc.etc..
I feel bad for him, but he needs to deal with it.
He has been doing a bit of flying to and fro, and I've send him to his post (neighbourwatching) and he started to whistle and call -> switching mood again...
=
so I would say: if she shows a certain behaviour: ask her to do something else first, if that is a 'no' then its time to shun/ignore. The moment you spot a 'wanted' or 'more normal' behaviour compliment the crap out of her.
Friendzoning the hard way

"No! .... I will only interact with you when you are not trying to hump my leg!"
It will not solve the hormonal issues all at once, but matingseason without a mate ... is usually a very short season!
Just make sure she has loads of other options to vent those frustrations (tricktraining that is not hands-on, recall flying, lots of bathing, shredding would be good if she had no option of getting the shredded material as nesting-stuff-- maybe hold a piece of stuf for her and 'steal' the shredded material as it emerges?)
I would go for "put her on a diet" first before shooting her up with hormones.
(weigh her daily and give her less rich food -> that will also influence her body-chemistry and dampen the hormones/ the weiging is to prevent drastic weightloss from not enough food.)
You already did the sleep / light so that is fine (does she actually sleep of just continue in low-light) now tackle the food.
Nothing tells a bird "not a good time to nest" like a foodshortage.
Usually I will advice against withholding food for any reason- I am just saying: lower the calorie-content of her intake!
Veggies!