I'd like to address your questions, I think they are valuable and the answers may surprise some people.
1) QUESTION: If they were giving Maddie pills/sedatives to sleep, how come the night before Mrs. Fenn heard her crying for 75 minutes and her parents had to return to the apartment because of it?
ANSWER: Maddie was experiencing what is called a paradoxical reaction to the pills/sedatives she was given. Some children, when given sedatives in NORMAL doses, experience the exact opposite effect. Instead of becoming calm and sleepy, they become combative and stimulated. Hence the 75 minutes of crying and allegations that Dr/Mrs McCann was physical with Maddie. Children undergoing this type of reaction typically thrash and are very difficult to comfort.
The very next night Dr/Mrs McCann increases the dose, she's a GP and NOT a pediatrician, she did what seemed logical but deadly to Madeleine. She upped the dose to toxic levels, she put her sleep alright. Deadly sleep