Ok...I think there are some things I need to clarify.
When I said she had amnesia, I made it so it was caused by magic. When she gets her memories back they will ALL come back. It will literally make her unable to function for a few days, as she will have to recover from the shock.
Her spren doesn't remember much either. I made it so her Nahel Bond temporarily effected the spren's memory.
There is a reason I didn't put her oaths in there.... and that is because of spoilers.
I wanted to keep this secret, because at the moment neither Zaria or Orb remembers this... but she went to Nightwatcher. She asked for adventure (this is a normal thing for Willshapers to want) and she got it. She also got the seizure thing I mentioned earlier, which stresses her out. I went all out and have her entire backstory written down! Also, no Cultivation did NOT show up.
She doesn't have it at the moment, although it will re-develop soon (AKA, the first time she will be alone after talking to another character), but her Radiant problem thing is an almost crippling anxiety. If scared she also goes into fight or flight mode, and has trouble controlling herself.
While she CAN hear the Rhythms, she can not, and will never be able to take a form. Ever. She doesn't have a gem heart.
I hope this helps clarify a few things!