1. The fairies lull her with a haunting lullaby
2. To be "clean" before marriage.
3. Oberon told him to, Oberon wanted Puck to anoint Demetrius, but Puck made a mistake and juiced Lysander instead.
4.He says he'll die before he'll be unfaithful before he went to sleep, but after he awakes he is unfaithful
5. She thinks he is joking and being mean.
6.
A snake was attacking her heart/chest. reflecting reality and her broken heart.