Sahraa seems to have a serious problem with her pads when walking on treated snowy pavement, such as with salt or chemicals. Tim said since he’s been back that walking in this kind of weather is a few steps at a time.
Thank you for all the suggestions with the picture below. I had never thought of it, but perhaps petroleum jelly might be good to try, or Musher's Secret, which I had never heard of but will look for today. We got several kinds of boots for her in Budapest, and she couldn’t (and/or refused to) walk in them, so would like to find something else if possible.
‘Daddy, my paw hurts!’ posted earlier: