Your levels are not only in the normal range, but mostly perfect range.
The one low instance you posted (46) was over 20 yrs ago. One place I read said for women, dangerously low is not until 40 and lower. What lows has it gone to in the last 5 yrs?
Saying you feel crappy when you Sugar is at 91 are indication of Toxic Hunger. I push people to look into that condition because I wasted years of my life, feeling horrible every day, being misdiagnosed as hypoglycemic when it was really Toxic Hunger and I cured those symptoms within days of a veggie juice fast and haven't had them since while going mostly vegetarian.
Do you feel you have to have meat at every meal in order to feel good? Do you think you could try a week-long veggie juice fast? If you have Toxic Hunger, you might feel amazingly better in just a couple of days as I did.