She realizes that she still loves him, and she's become almost a little obsessed with her mistake in ending their relationship. This is her swallowing her pride and saying she's sorry, and it's okay if he doesn't want to get back together, but she just needs to tell him how sorry she is for being so mean and stupid. And if he does forgive her and they do get back together, she'll love him right. so sweet! I just wish all apologies were this heartfelt and eloquent about it.