Im FREAKING Out!!!

Ever since my mom kicked my sorry excuse for a "father" out of the house things have been fine, very quite but fine. I've been able to focus on my work more and I've been clean since the day he left. I have an extreme hate of him, I don't like anything he's done or anything he says. He's done nothing good for me. He took away my childhood, so excuse me if I can't see past it.
So it's been 18 days since he left, my mom has seen him and talk to him on the phone almost regularly, which I'm not exactly okay with but i've kept my mouth shut. Though now apparently, as I was told a couple of hours ago, he's going to be aloud to stay in the house, the one he got kicked out of, while my family goes on vacation with a friend of mine.
Like what the hell!!! My mom didn't even try and continue to talk to me about it, she just kind of said it and I reacted so poorly apparently that, it was the end of that conversation and when I said if she wanted to talk lets talk and she yelled at me for walking away.
I can't sleep now, I'm beyond agitated. Im kind of freaking out... I don't know what to do!!! I feel so overwhelmed, Im not only afraid something bad is going to happen, I don't know why. I don't know, Im scared.

*BIG HUG*
I'm sorry I have nothing useful to say. Take care

I'm sorry that this is happening. It seems to me that since YOU live in that house, that she should have ASKED YOU too if it would be okay. Because what i see is when you get back from vacation, he will not be asked to leave!!!

Are YOU going on vacation too? I hope so because you should not be left in the home with him.

I'm almost certain that she won't ask him to leave when you get back. I don't know why I feel like this, but I do. He probably talked her into letting him stay again.

I think you should have been given the opportunity to say yes or no too. Afterall, you have to put up with him too. I'm really sorry. Is there anywhere you can go if it gets too unbearable?? Do you have any other family where you can stay?? Don't hesitate to go to other family members homes if it gets too bad. God bless and take care. Hugs, Lee

In a way I knew this was gonna happen sooner or later. I just didn't think this soon. Her excuse was to cut cost, he has family that has welcomed him to stay with them, but he'd rather waste money and stay in some slezzy motel. I hate his guts.
I figured the only reason why she didn't tell me is she knew i was going to be upset.
By family, its me, my mom, and my two little brothers...
I'm going with them, but last time he was left alone, he ransacked my room and broke a few things.
He says he's clean, my mom says he's better, I guess I'm the only one who sees past his stupid act.

Sometimes it is extremely hard for people to let go, even when its bad. Maybe you should speak up and talk to your mom, only if you are absolutely confident that you can keep your cool, no matter what she says. No matter what, I hope it ends up in your best interest.

I'm really sorry this is happening. MAYBE he is clean -- miracles do happen. I understand why you're doubtful. You've heard it all before. But just try to enjoy your vacation and forget about him. Don't let him live RENT FREE in your head. He doesn't deserve space in there.

He needs to earn your respect and trust back -- don't give it to him free. God bless and take care. Hugs, Lee