They may become too self-conscious with their physical changes to undress in front of others, including parents. Girls often must deal with teasing from other children, especially about their breasts. They may feel more comfortable around older children, but are not mature enough emotionally to be accepted by them. This condition requires medical treatment. Seek advice from your physician.
Hormone therapy can stop premature puberty and even reverse it in some children.
Parents can help their daughter deal with premature puberty by reassuring her. Keep treating her like the little girl that she is and advise her teachers to do the same. Guard her against sexual abuse and possible pregnancy. Help her deal with teasing. Help her talk through her frustrations and gain perspective about her condition.