She will know if her sugar levels are dropping too low, for she will have symptoms of fatigue, irritability, and other symptoms that you can do a Google search on to find out about. If this happens, or if she checks her glucose levels
and they are below the normal
range of 70-126, she can talk with her doctor and lower her medication. WIth some work and a little time, maybe she can go off the meds entirely since she is being helped before developing out-of-control full diabetes.