i asked about the first question b/c in one of the interview feedbacks, someone stated that she would tell the family. she said that apparently that was the wrong answer and that there were too many legal implications to confessing. I think it would be best to not try to hide mistakes b/c then if it ever does come out it only makes you look worse, especially in court.
As for the second question... I used to work in medical records. even though she is a minor, there are some things that parents cannot access w/o the minor's signature. one of those is records pertaining to sex. so it is illegal to consult the parents w/o the minor's concent. we actually had a father come in asking for his daughter's records, but she refused to sign for them. it was kind of ackward.
i think the ethical part is wether or not you write the prescription. i had a friend who had to change doctors b/c hers refused to write prescriptions for bc (even though she was 27 and married) due to her religous beliefs. personally, i don' think i would prescribe a 14yo bc. it is her right to go to another doctor though.