Is strenuous excercie and depravation of sleep consider hazing?

My daughter is joining a sorority and in her first week she has been kept up most of the night...has had to do strenous excercise until late hours in the morning...has had only three hours of sleep or less...has to spend her free time at the library because she is not allowed to go to the dorm until she is called and is living with three other line girls in one bedroom she sleep on matress on the floor....she has called me crying but doesn't want to let the line girls down...I am very worried about her...what should i do...should i respect her decision or do something? Thank you all in advance for your responds.