Legality of questioning with no cause as to Herion use at accident scene.

My daughter was involved in a minor collision. At the scene she was questioned if she "Shot up" or "Did Dope" also to push up her sleeves. Adding insult to injury, bystander offered her expertise with "addicts" My daughter is not an IV Drug user and answered as such but was mortified at the questioning. She just recently got her license & was very upset and this line of questioning was not something she had encountered while responding to calls as a volunteer EMT. Note that she has a small nose ring but was dressed for & traveling to work at the time, Is this legal or profiling because of her age & jewelry?