I think you need help in the home to give you respite (for sleep or away time for yourself or shopping). Family assistance (siblings, children, nieces/nephews) might be the best option if they are close enough or willing to come (and so often they have no idea what you are living with until they see it for themselves). Or if family isn't available or willing, paid help if you can afford it. I would not rule out institutional transfer if there is no other alternative. You simple cannot kill yourself trying to do what requires more than you are able to do. Consider a hospice referral also. At age 95, everyone's prognosis is "six months or less" and she should qualify. While you are relatively young, everyone has their limit. Sleep deprivation is one form of torture. Don't be afraid to look for help.