I am so excited this thread is still fresh! I started reading it not realizing how current it is and I followed along like it was Harry Potter or something, laughing and crying at every twist and turn! First of all
@cab124 you are doing great and have already gotten wonderful advice here. Congrats on bringing home your new companion and even more so for choosing one that is going to take more time to earn your trust. I am a relatively new conure owner, I brought Sebastion home last October and he was 8 months old and I've learned so, so much. I don't want to repeat what anyone has said so I've read through the entire thread carefully and hopefully I won't.
One thing I noticed that no one kinda put out there in bold language is that this may take MONTHS or even YEARS before she completely trusts you. It also may only take a few weeks! Every bird is different, but don't give up! The best advice I could give you is do not measure her progress in days, measure it in weeks and even better, months. Sebastian was kept in a wonderful store before I brought him home, surrounded by loving caretakers and had frequent regular visitations from customers who loved him- however that didn't stop him from being a scared-y bird when I brought him home! It took almost 5 months for him to gather up the courage to start really playing with toys and showing us his personality. I have to say that check point training was a total game changer, he was not comfortable coming close to me or stepping up until about two weeks of doing check point training THROUGH the bars. Here is an awesome video on that:
When you are reaching in to give her a cashew you are moving much to fast, you need to take this slower than a snail baby! Think about it, you are giving her three new and huge scary things to process, your hand in her new home, your hand, and the cashew. Back it up, approach giving her treats from your hands through the bars, and slowly, very slowly, build up her trust. Also get yourself some Nutri-berries, it made a huge difference for me once Sebastian realized I had those suckers he was like, "I'm still scared of you but gimme that!"
Also, check out more of Mandi's videos and also Marlene Mc'Cohen on YouTube, watch any and all of their tutorials on training and trust building, and teaching step up in a trust building way, they both have different approaches but are very very educational and will help you understand her body language better. Also her bobbing up and down wanting to get out of the cage is a great sign! Not a bad one! It means she is ready for you to open the door and let her explore her new home! But please watch some videos on YouTube on how to get her back in the cage without forcing her and breaking trust, because she is flighted it will be a bit more of a challenge for you, but just make sure you're prepared and you'll figure it out!
One last piece of advice, don't worry about where she came from and what she went through- because it's over and it doesn't change anything about how you are going to approach her and gain her trust. Focusing on the past won't serve either of you, but working together every day to learn from one another and build trust will! It honestly won't make a difference if she was meant to be a breeder or beaten or whatever- you just have to take it slow, win her over with your steadfast assuredness and steady supply of food and treats, and show her through your actions and energy that you are safe and you love her. Birds sense energy more than anything, and if you are sitting there looking at her, thinking of how bad it was for her, pitying her and feeling sad, she will feel that and pick up on it and reflect it back to you. Shine your love on her, radiate pure joy and compassion and acceptance to her and she will radiate it back!
I am so, so excited for you both. I think as long as you can really internalize that gaining her trust is a marathon and not a sprint you will find so much joy in every little sign of growth and trust building as I have with my Sebastian. FYI it's been 8 months and he went from being a scared little man afraid of everything and wouldn't step-up to my snuggly funny incredibly trainable and intelligent fluffly little bundle of joy!! He even dive-bombed the dog in the face the other day LOL
Keep up the great work!