No , it won't ; Instead, take a full bath. Ummul Muminin Hazrat Umm Salama agreed. Said , Umm Sulaim Razi, wife of Abu Talha Razi. He came to the Messenger of Allah, may Allah bless him and grant him peace , and asked, O Messenger of Allah! God is not afraid of the truth. (So my question is , if a woman has nightmares, is bathing obligatory on her ?) In reply, the Messenger of Allah, may Allah bless him and grant him peace , said , " Yes. If he sees water (wet). (Sahih Bukhari 1/42) It is understood from this hadith- 1. Like boys, girls also have nightmares. 2. If you have nightmares, it is obligatory for both boys and girls to take a bath.