Hi OP. I haven't read the whole thread - I'm one of those annoying posters who wades in, ignorantly.
I hope you read this and it helps you.
My DD had cancer; she was DX in Jan 2011 after 3 months of me fighting GP and A&E who all treated me like I was paranoid. I was told repeatedly that she was fine and I was over-reacting.
I am not, for one second, suggesting this is what is going on with your DD.
I have, however, in my five years of hospital-going experience learned a few things about how to get stuff done when the Drs insist you are some clueless, paranoid idiot:
- Write down everything. When any doctor speaks to you, ask them to spell their full name for you. Make it CLEAR you are recording everything. This is also useful for looking back over with whoever is treating you when you finally get to the right place. This is also helpful if you share care at the hospital. They are buggers for saying one thing to you, you go home for a rest, then whoever has picked up the care of DD getting told something completely different.
- Find the PALS service at the hospital and use it. This is the patient liason service. Contact them over your concerns, the way you were treated and they will intervene on your behalf. They might not be available over the weekend, but will be their on Monday. This is also where you start a formal complaint.
- Ask to see the consultant - I've seen some good advice on here about who you should be asking for.
- And this sounds so divisive - but let them see you are emotional. It was amazing how care ratched up a notch when I got to the point that I cried. I'm not a crier, but I was on my last nerve. DD is autistic and would never make a fuss. I told her she needed to make a noise to show that it hurt. I know how awful this reads, but because she was dealing with it all in silence, they thought she was fine. As soon as she cried and made a noise, they couldn't do enough to help. It makes me feel sick writing this, but it is sadly true.
- If you get sent home, go back. Keep going back. I went back about 4 times before she was finally admitted. It just takes one good doctor and you're off.
- If you do get sent home, make it absolutely clear that you are unhappy with the level of care and you have their name and you will be acting on that.
- I am not, believe it or not, confrontational. However, I had to learn to be. If you struggle, draft in some back-up, get another family member to be there when you challenge them.
Hospitals are fraught places. I learned that the people who make the most noise seem to win. Those who endure politely get nowhere.
Saying all this, I am still intensely grateful for all of those professionals who did listen and did care. They were out there and, because of them, I have a happy 17 year old DD who is now doing her A levels and 3 years off chemo. 
