She was fuming, as was her right. He had no right, no fucking right whatsoever to even be back in Beacon Hills. How dare he come to the place he left her in and try to pretend that the last seven years hadn't happened? How dare he come back and act like it was her fault that he didn't know his daughter?
Stiles pushed him out the front door and onto the porch so that she could yell properly without worrying about waking Lily up. He held up his hands and tried to say something to calm her down but she pushed him away again and yelled,
"I hate you so much! You have no idea how much I hate you. And you know what the worst part is? I could have taken just the rejection. I would have been okay. I hate you because of what you did to that little girl. She has spent that last seven years not knowing who her father is because I didn't have the guts to tell her that he didn't care enough to know her." That was a low blow, and she could tell it affected him through the widening of his eyes but she didn't care. She needed him to know.
A mother's love is endless, but so is her rage if someone or something threatens her child. Her copper eyes shimmered with unshed tears as she said in a watery voice,
"I couldn't look her in the eye and tell her that he never wanted me and that he never wanted her to begin with." She looked away from him and let a few tears fall before wiping them away angrily. Turning back to look at him she no longer felt sadness. Just anger, pure and strong. Taking a deep breath she pointed to the road and said quietly,
"I want you to leave. And I don't want you to come back. She doesn't need this; she doesn't need you." He held up his hands again and looked at the house behind her before saying,
"Stiles, you live in a tiny little apart-" She cut him off angrily saying,
"We've been doing fine for the past seven years without you Derek. I'm sure we can survive a little bit longer."
He simply watched her for a moment until he said quietly,
"I know that what I did was cruel. And you're right; it was a terrible thing to do to Lily. But I'm trying Stiles. I really am. This isn't exactly easy for me either! But I'm going to make things right. No matter what I have to do. I promise." He turned and started towards his car as she muttered,
"Yeah, cause you always kept your promises, didn't you?" He heard her, there was no way he hadn't, but he didn't acknowledge it, and then he was in his car and driving down the road.
Stiles let out a deep sigh and sat down on her porch, holding her head in her hands as she mumbled,
"Fucked is what I am. Completely and utterly fucked."