Why does Hermia insist that Lysander sleep a little ways from her?
Hermia wants to maintain her virginity until she and Lysander are married. He is feeling passionate and, because they will be married very shortly (when they reach the residence of his kinswoman), feels that it is okay to allow themselves the pleasures of intimacy. She, of course, prevails. The fact that she does cause him to sleep apart from her allows for Puck's mistake with the magic juice to take place.