Flojobunny I think you need to go get an education about it before you start accusing people of flattening my daughters mood just because she's a bit lively makes me feel sick at the thought.
ADHD is more than a bit lively it is constant and the pressure on a family when one member has it is immense.
Wht medication does, essentially speed, is wake up the 'control' part of the brain, which then does its thing of, um, 'controlling' everything it should have been doing all along. This may seem to 'flatten their mood' but actually it normalises, for want of a better word, an abnormal set of behaviours.
If you are happy to allow your DD to struggle in school situations and be judged as being difficult, rather than get a diagnosis, then that is entirely up to you, but please inform yourself of the options and especially the choices others make for their children rather than spouting uninformed clap trap.
Neglecting to get diabetes diagnosed will not make a person Mother Of The Year and neither will neglecting to get a diagnosis of this, no matter how much you may choose to judge others.