if your question is, is it related to depression
, the answer would be yes....control of glucose
is dependent on many things which are influenced by mood and if one is depressed then they will all be affected.
If your question is does she have depression? then you must consult a psychiatrist
who will take a detailed history and let you know about that as there are lot of questions answered first before you can give a label like that.
Evidence from studies show that diabetics are at more risk of depression lika nay other chronic disease and that depression does effect the diabetic control.
Hope this helps.