see if she passes it.
At the least get your vet to simply give a Calcium EDA or Calsenate injection. This chelates or binds toxic heavy metals and is usually all that is needed. Often more than one injection if your bird.
2) the possibility of obstruction.
Follow your avian vet's advice, Dr B sometimes doesn't answer for over a week, so I will no be sending this question to him. If you are not able to do surgery, all you can do is wait and see anyway.