Helena is the odd girl out. She is the only character that nobody is romantically interested in. She hence has a lot of time to reflect about the nature of love in all its absurd glory. Helena pines for love. She represents foolishness herself because of her desperation to fall into romantic love. When love comes along via Demetrius and Lysander Helena doesn't know what to do. Whether or not the love is real is besides the point. Helena has spent so much time musing about not being in love, she can't handle it when love actually comes calling.