Hi Benjamin D.
The mood swings are tough and there are alot of people on Health Central just like you who are trying to make sense of what they are going through and have loved ones who are along for the ride. There are several shareposts where readers shared information about mood swings being associated with low blood sugars. Some of them just like you, diabetics who are on their way to becoming level again and needing to find a way to explain and understand what happened.
Karen has a share post here written April 28th about this very subject. You can click here to read the entire post.
Tracey posted here about being angry with her husband. There are some good links to information here.
Kim Benjet is a caregiver expert. Her son has diabetes. She writes about the
experiences of a friend who is now 50 who remembers the mood swings his
mother experienced when they were kids. You can read that article here.
I hope this helps somewhat. Sitting down with your wife and explaining that you are sorry about the mood swings, and showing her what causes them might help. Ask for her understanding, but also understand yourself that you need to manage your care and make sure you avoid any highs or lows if you can.
Good luck, stay in touch and let us know how you are doing!Vicki M