Gender confusion is a treatable mental disorder. However if he already had the gender corrective surgery, then we are in a different ball park. So Jacob is now Juliet. Are there not rules to accommodate bathroom use by "transgenders" who already had surgery?
Her older brother Jacob did sing, was pretty good, but not as good as Jackie. Their parents (and Jackie) must have had a role in this madness.
If it gets the birth certificate changed, then no issue.