mental health

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Hi my 18 yr old sister is an out of control type 1 diabetic. She does many careless things with her life and can't keep any kind of friendships or relationships w ppl at all. She has decided to see a psychiatrist to maybe help her learn to control her blood and then discover any other issues she may have (which she does). Does anyone know of any good and I MEAN GOOD psychiatrist in the York/ Lancaster PA area that we can send her too. It would help if the person is knowlegable about type 1 diabetes or has type 1 diabetes themselves.
Thanks