7 yo wants to die!

[lucybowen]

My 7 year old daughter is either good as gold or her evil twin.  She can be the sweetest thing on earth.  Helping everyone.  Concerned and very caring.  The next minute I swear she turns into the evil child. During these moments she is belligerent and extremely rude to me,  her mom. She will scream at the top of her lungs when she does not get her own way.  She will say some very hurtful things at me during these times,.  ex: you don't love me and you love Alex (her brother ) way more. Sometimes I just want to die.  I'll kill myself, I want to kill myself. This whole family hates me.  No body listens to me.  You all want me gone and then on and on about wanting to be dead and wanting to just die.  
At first I didn't worry to much and thought it would pass but it is not going away. (1 year later). I feel she truly believes that I love her brother more and is she thinks she wants to die at that very moment.  Now I do not love her brother more and am very careful to share equal emotion and time with both. Her brother is 2 years older than her.  My question to you is how to deal with the situation when it arises.  She is very out of control at these times and hard to get close to.   I don't know what to do anymore.   Is there someway for me to try and help her out. Or should I get her in to see a counselor.
Please can you give me any suggestions.   Her family is in tack and there is no major marital discord in our family.  Just your normal middle class family I guess.
Regards, LB

[margypops]

How does she gat on with her brother, is he kind to her, no teasing sibling rivalry ? what triggers off the tantrums you describe , what was happening prior to them ?