Dear Lol, sounds like a real dogs breakfast of diagnoses. While Depression can include the symptom of Anorexia ( loss of appetite ) and maybe weight loss, it does not include the other typical behaviours of anorexia associated with the obsessive relationship with food, shape and weight. I find that Bipolar Disorder ( 1 or 2 is a minor ttechnical distinction in the DSM system ) seems to be being currently very much over-diagnosed in SA ; but it ought to include episodes of both Depression, and of mania / Elation, when one's mood gets unrealistically too high. And ADHD is different from all the others, involving problems with attention and concentration different from those which can be seen in Depression.
So I can't grasp how all these different diagnosis can have been made in one young lady, unless her condition andher general clinical picture is very complicated and confusing indeed. When such a situation gets complex and confusing , it generally helps a lot to see a different and independent psychiatrist for a second opinion, and a reassessment and re-think of the whole situation.