My daughter is very jealous of her twin brother. This comes out in the form of attention seeking tantrums. She seems desperate to be in the limelight. She loves him dearly and plays with him happily. They have separate rooms. They seldom fight. But deep down she seems intensely jealous of him, and wants us to love her alone. How can I make her feel more secure about her position in the family? We also have a 9 year old son.