Please Dental Experts, ... I'm Scared.. Is It Possible To

Please dental experts, ... I'm scared.. Is it possible to remove a broken needle from the root of a tooth. I performed a first session of a root canal yesterday and the dentist told me that she broken a needle inside the root and it can never be removed... She said that the good thing is that the needle is at the end of the tooth taking the shape of the filings so she will add the filling in my next session and that it is normal... I'm scared, please advise