I want to cry, but I don't

I have a sort of clenching feeling in my chest and I feel like my eyeballs are about to burst. If I let myself, I will cry. Not tears of sadness or even of the tremendous joy I feel. Tears of utter frustrations and confusion of what I should do. I have a beautiful child, Josie. She can be the sweetest little girl in the whole wide world, especially when she wants something from you or if we are around people she likes (who usually have something she wants).

But when we are alone and I need her to be a big eight year old girl and clean her room, brush her hair, or any of the other things she is more than capable of doing, she becomes a nightmare. And I don't mean that she's kicking and screaming or throwing a tantrum. That would be easy, I've been through that with each of the other children. She becomes what I can only think of as passive-aggressive. Everything has to be repeated over and over. She is constantly distracted. She won't clean her room, she'll fall asleep under her bed. She will only brush her hair... to a point. Homework has to be carefully watched and checked because she won't do it. Timeouts, don't work. Physical discipline, doesn't work. Grounding her from playtime with friends, doesn't work because she doesn't have any friends. Taking away toys, books, outside time doesn't work because she doesn't care. Even the opposite, giving rewards for completing a task, doesn't work. And if I do get upset with her and send her to her room, I have a bloody mess to clean up because she will rub, scratch, pick her nose or any other place on her body till she bleeds; and she doesn't cry when she does it. I almost don't believe the child feels pain, just like she can't feel if the shower is too hot or cold.

The worst part is that I don't feel like anyone understands how difficult she can be. I believe that because she is such a sweet child around other adults, they just can't believe how difficult she can be. Even her pediatrician tried to blame our dry air and not putting Neosporin in her nose for the nosebleeds. It took me telling her three different times before she understood that the child gives herself the nosebleeds. We have a humidifier, we use Neosporin, but I cannot keep the child from making herself bleed the minute I turn my back. It should not be this hard to convince people. I should not be made to feel like I'm overexaggerating because she's a damn good little actress. I even have a hard time gettting my own husband to believe how difficult she can be. The only person who I know understands is my mom. My mom has seen this little girl in action when she doesn't think anyone is looking. And if looks could kill from this girl, I'd be dead ten times over. My mom doesn't fall for her "I don't understand" or "I need help doing this" bologna. And I just feel so frustrated that I'm ready to cry. I need help.