[Kintsukuroi.]

I know where I live children (under 19) can consent and agree to medical care/treatment (and make the appointments without needing to discuss with your parents) if they are capable:

When are children "capable"? The law considers children to be capable if they understand:

-the need for medical treatment
-what the treatment involves
-the benefits and risks of getting the treatment
-the benefits and risks of not getting the treatment
-If the doctor or other health care provider explains these things and decides that the child understands them, the care provider can treat the child without permission from the parents or guardians. The child may have to sign a consent form.

There's no set age when a child becomes "capable." Doctors must use their best judgment in each case to decide if the child is capable. It depends on how mature the child is and how serious the medical treatment is.

The doctor can't discuss the results or treatments of a capable individual unless that person has given permission.

I know that I could tell my doctor that I wanted something to remain confidential and it would unless it involved someone hurting me or me hurting myself (and a few other things). I've been to the doctor and the walk in clinic a few times when I was under 16 and it was kept confidential and they did not discuss it with my parents.

The best thing you can do is call her doctor and ask! Or if she is worried, she could check out a walk in clinic.