Whats wrong with my daughter?

I have 3 kids Katie 5, Hannah 8, and Kelsie 12
Hannah was always a sweet girl but lately (in the past year or so) she has just changed. All of a sudden she is crying for no reason at all, She will be fine, and then suddenly in tears, over nothing (or at least she isn't sure, and neither are we) this usually happens at night. All of a sudden we will hear her, sometimes she makes up reasons like "Kelsie is being mean to me" when Kelsie didn't do anything (or isn't even in the room) or something random. I have asked her many times why she does this a couple times she has admited she has no clue, it just happens.
Also, according to my other two daughters she has been acting very oddly and innapropriatly to them. With my oldest she keeps saying "I love you Kelsie, kiss me, I want to make love to you" and then hugs her and wont let her be. At night she will sometimes get in bed with Katie and try to touch her and kiss her. Apperantly she will hold her down and if she gets mad Hannah beats her. Also if Katie cries or says stop she either hits her again, threatens to kill her, or bribes her.
She likes to make her barbies have sex. I know that she has watched porn before (she thinks its funny) so thats where she probably got it. She seems to love the idea of sex, she once pinned her friend to the ground and humped her.
One time at school she tried to strip for the boys in her class hoping one of them would have sex with her.
Her self esteem isn't to high. If she sees a camera she runs and hides, if she see's a picture or a family video she begs and demands we turn it off or delete her because as she says she is "so f**ing ugly" then she cries and tries to hurt herself. She gets disgusted by the naked body, specifically the female genital area, if she sees or hears the word vagina she gets grossed out, she says they are disgusting to look at. for the last 8 months I would constantly find wet underwear after she took a bath. It occurred to me that she has been taking bathes with her underware on, in fact, she rarely ever takes them off. I asked her why, she said "because I don't want to see my vagina, it's disgusting and I don't want it there" I told her that she needs to bathe without them because she needs to wash "down there" she said "NOOOO I am not touching that, it's sick!"
She has also become extremly depressed, she talks about killing herself, and wanting to die. She both verbally and pysicaly harms herself (and violently) She will lock herself in a room for sometimes a couple hours and start beating herself with things like bushes, curling irons, her own hands ect...her reason for this is  that she "needs to be punished" because she is "a terrible brat" or a "f*ng loser" a moron, a disapointment. No matter what we say she still seems to hate herself and her life. I'm not certian but I think she tried to kill herself by sticking her head between the bars of her bed in hopes of sufficating herself (she said she got her head stuck "by accident" but I doubt that)
My mother (her grandma) doesn't know what is wrong and will often punish her for hurting herself, by yelling at her or taking things away (I believe even smacking her once)
Hannah hates her.
We take her to therapists but she wont talk.
Any idea what is going on with her, she wasn't like this a year and a half ago.

[RockRose]

She sounds like she has been sexually abused,  bristle.

[bristle1]

I asked her. She said she wasn't, no one hurt her. She said she's just a pshyco and she doesn't know what's wrong with her.

[specialmom]

Where is she watching porn?  She's 8.

[bristle1]

It's all over the internet. We have filters and child safety but somehow she finds it. One times her friend braught over her dads playboy. I took it away. I have talked to her about it, but I don't think it works.
Could watching porn be whats causing all this psychotic behavior?

[specialmom]

Um, yeah.  I think you need to supervise her on the internet and limit the time spent on it.  And I am on the internet a LOT.  Nothing just pops up for me . . .

Your daughter has been sexualized.  It is not normal, it is not good.  She's seen it (as you say)----  she's acting it out.   She needs therapy immediately.  The fear is that she has been molested.  And child on child molestation is often a response to being molested.  What she is doing to your younger daugher is abusive.  And if she tries it with one of her friends on a sleep over----  you will have another parent ready to call out the firing squad.  It needs to be addressed and help given immediately.  

I think you are going to have to be a bit more involved and on top of things here with this young lady.  A real crisis is brewing.  good luck.

[bristle1]

Are you sure it's not watching the porn that made her like this? Oh we supervise. My oldest stole my card and went on ebay. But we don't always watch, we just check in.
She wont talk to the therapist. She says no one hurt her and she would remember if they did. She always denys anyone hurting her.

[bristle1]

It probably doesn't help that Kelsie calls her "lesbo" all the time. My oldest and youngest are close but my oldest teases Hannah all the time.

[specialmom]

I'd shut the internet down if I were you.  Your kids have way too much freedom with it, in my opinion.  If they need it for school----  you sit with them while they do it.   Period.  Yes, porn is a problem for a young child.  This probably shouldn't be a question.  I think you know it is.  I'm trying to tell you that this is a SERIOUS problem.  Something is very wrong.  Has she seen a child psychiatrist?

I'm giving you the benefit of the doubt that this is a real story . . .

[bristle1]

They probably do. I try to take their word that they are not going to do anything. But I guess they get away with to much.
She goes to a therapist and a psycologist. She is on zoloft.

[RockRose]

This is too bizarre.   You don't buy porn on ebay with your parent's credit card,  unnoticed.  

I hope your dog doesn't eat much more soap,  bristle.  I also hope you get a different hobby than trolling message boards.

[bristle1]

I'm not. My daughter did not buy porn from ebay. She bought a juicy handbag.

[margypops]

Oh I was going to respond but I dont think I will........