Does bathing a newly married woman expose her to illness and prevent her from praying, and is ghusl obligatory for her even if her husband says that water can enter the place of intromission?

A woman must perform ghusl (definition) and pray unless it is proven that bathing harms her. If harm from bathing is proven, she should suffice by wiping over the wounded area and washing the rest of her body, with the obligation of performing tayammum (definition) according to some scholars. She is not required to wash the inside of the vagina, but only what becomes visible when answering the call of nature.