wOw, Saemma. She sure is a beauty! I can't tell what type of ekkie she is, as I am no expert at all, and besides the size, they all look so similar to me.
I just wanted to share an experience about a female ekkie that my friend had. They brought her home because they said she was the sweetest thing. They could hold her upside down and pet her and she was as cuddly as any bird they'd ever met. They brought her home,and something changed. They said it might have been after she was startled by some other flock members. I don't know why or what, but less than a week after, they were no longer able to handle her at all. They have to use a stick to get her to step up. They say she's like a totally different bird. I saw the bite marks all over his hand to prove it. When I went over, she looked fine, and she did step up on me. She seemed friendly enough and was sitting nicely on my hand. Then all of a sudden without one hint of warning, she bit me! It was the first time I got bitten by a parrot before. I posted it on this forum. It bled and got all swollen so I couldn't take my ring off my finger. Anyway, I'm not saying AT ALL that this bird will be the same. But it was just an experience to share. Perhaps any other species could have done the same thing, but the new owners say she's like a completely different bird from the one they first met....and the change was all in the space of a week.
Now, I would take a deep breath and just consider again how bringing her home will affect your life and your present birds and you. I wish I had that crystal ball to have you peer into for some insight. But one thing I can promise you is that things will not be the same in your home, for better or for worse! But being the great parront that you are, whatever you decide will turn out okay. Go with your heart and your mind.