Snowy my dog fell down the stairs

As you know, Snowy is developing cataracts and hence, will go blind. We have all noticed the small changes that are happening now. When I took them to visit my parents the other day, Snowy would not go down the steps by herself. I had to pick her up.
This morning as I was lying in bed, I noticed that Snowy had gone out of the room. A few minutes later, I heard this thump. My heart sank as I dreaded what I would find. I raced out of the room and there was Snowy on the landing, licking her paws. She had obviously fallen down the stairs. I picked her up and took her outside to the toilet.
Every day something else happens. It is getting sad for me and now I am beginning to worry how she will cope when I am back at work in a week.