Hi,
I'm a mum of a teenager. Niamh is 13 - just gone into Year 9 (she's 14 in December) going on 22 in the head! I too have daily battles with her explaining why she should do this and why she should do that, when all the time she is a very bright girl and she knows what she should be doing. We too were on Novomix when first diagnosed in January '10. We also found it very restrictive. By April '10 we were using MDI, which we found to be revolutionary. In October last year we were funded for a pump and can honestly say, even with everyday normal teenage hormones/high bloods/low bloods, haven't looked back. For us, this works.
I remember Niamh saying she didn't want her biscuit at 10.30 break and having to eat it. Also booking family meals around dinner or lunch. Have you thought about looking into MDI?
I found that reading everything I could get my hands on helped us make an informed decision, although each time we pushed to try the next stage, we dithered not knowing if it was better the devil we knew.
Good luck and hope things sort themselves out
Gayle x