First of all there is nothing much what you can do to lower her blood sugar, its only the physicians in the ICU
who are capable enough to treat this. The level of her blood sugar is quite high, however the source of the level of the blood sugar has to be first determined whether this is related to insulin deficiency
due to some malfunction in the pancreas
function or due to some underlying infection etc. Based on this, the treatment will be started which either can be insulin based or to treat the underlying cause. Regards.