Anger....guilt

Anger. Is this even enough to describe what I am feeling? Today, I am angry. I am so mad, I could scream. Inside, I am crying...I am screaming...I am hurt...I am ANGRY! A few weeks ago, I found out something horrible...something unimagineable. I found out that someone (another child - girl, 4yrs older than my daughter) was hurting my daughter. I am furious. I am crying inside for my little baby. How do I get over this anger? How do I move on? It has consumed me. How can I help her when I can't even help myself? How do I know she is okay. I mean, really okay. It has flipped our lives upside down. I trust no one. I have hate built up inside me. I have guilt thought I know I shouldn't. I wish this whole situation would go away. I wish this other child would go away. I have never been this angry in my life. I wish I could just say so much to this other child but I have to remember that she is still a kid. I hate her. I see her face when I drive. When I sleep. When I work. I see her everywhere. I want to write her a letter. I want her to understand what she has done. I hate feeling this way. I want to wake up from this nightmare. Please tell me I am asleep...please.