I'm 66 y/o and have had type 1 (juvenile) diabetes since age 10. Andy, your Girlfriend is living with diabetes instead of letting diabetes livie with her. She's letting it control her life instead of her controling the diabetes. She needs your support, FIRST and FOREMOST! Hang in there; keep letting her know you care. Support in truly what she needs. From personal experience, I believe the headaches are from her insulin regimen -- 3-4 shots a day sounds like short-acting insulin (too much) and the headaches are a down-side. The moodswings are her continuous denial that she's a lifetime diabetic. I did it -- except when I was coming along the whole diabetes treatment plan was much different. Doctors can guide her, but she has to want and get better knowledge through research of what she's dealing with -- and take control. Otherwise, it's a slow suicide, with all the complications that manifest. And there are many -- some personal ones that WE don't even tell the health care professionals about. After 56.4 years of JD, I am now blind and legally blind, have retinopathy, neuropathy, nerve damage, as you said, all the stuff you're read about. But no kidney disease, Yippee!! Hang in there, Andy. She needs you. I've handled my disease all alone 'cause nobody else cared, and I wish there had been.