Hello and welcome to you and Ruby.
Please, please, please do not take Ruby back, things can be worked through if you have the will to get there. My Plum can be a little beast some days (gosh did I say that LOL?).
They have an iron will and def need boundaries. So please carry out positive reinforcement - reward the good, ignore the bad. She is still young yes? Still a baby then.
Give her plenty of toys to keep her occupied and as mentioned safe wood branches. (Have we a list on here?)
My hol RB2 chews through toys at a rate of knots but mine hardly touches his. If you keep her busy - foraging toys are great I'm sure she'll be less noisy. What causes the noise, any ideas? Can you describe where her cage is positioned also please? Hope this is a start ... chin up.