Re: Juvenile T1, some questions & mostly venting I guess...
It's very common to have mood swings, especially irritability with high blood sugar.
You might look into the pajamas that have the pump pocket build in. This will prevent some of those nighttime cord kinks. You can also use the pump "belt". But there are lots of products for kids to use at night.
When your daughter's BG is over 350 for more than a couple hours, you should always change the pump site to avoid DKA. YOu're better off wasting a pump set than waiting it out for too long, repeatedly bolusing with no effect.
There ARE support groups for kids. I work at diabetes camp in CA. The kids love it, love spending time with kids like them. Most of the counselors are T1 also. You might find kids penpal programs or something through the JDRF or the Diabetic Youth Foundation or program like that near you. I DEFINITELY suggest diabetes camp, though. It is a great experience for the kids, teaches diabetes management, independence, and creates GREAT friends who have the same experiences. THey have them all over the country.