"Father, give my sister hope...hope in You and Your Power. Nothing going on here escapes you. This child has a lot on her plate; Your grace is sufficient. Give her Your Peace, which passes all understanding. Give her times of restoration and healing. Father, I know you have her, I know you do. Help her to know it too and never doubt it. I also ask that if there are any in her family that doesn't know you as their Lord and Savior that they will, in Your perfect time. I ask these things in Jesus' name."
Robin,
Your going to be OK. You are OK. Your Creator and Lover of your soul is working for you. Even in this there is a purpose. Trust Him. Lean on Him. He is Faithful!
It doesn't matter what has happened or what is happening, you can rejoice, for He is with you! He will not put more on you than you can bear. You can't do this in your own strength but through Christ's strength you can. Just trust the Lord. Take it one day at a time, one moment at a time. He's got you, girl. Keep the faith.
Love ya,
Joseph
P.S.: I've worked with dementia patients and know the challenges. I hope your getting help with this. If not, see your husband's doctor.