Gracie
I think that Parrot has the right ticket...ask your daughter's doctor to work with you on making a more flexible schedule for your daughter. For example, she could take a base shot of long acting insulin, and take humalog (short acting) prior to meals based on the carbs in that meal. That way, if she chooses not to eat, then no additional shot of humalog, and then no worry of bottoming out.
OR BETTER YET...just tell her that her behavior will lead to having to take addional shots, if she doesn't eat on schedule. Just the THREAT of having to get shots when I was a kid would have made me behave!
Welcome to the group, Gracie! Hope things work out for you and your daughter. Please keep us posted, OK? sheryl