Louise is limping again and this time we are still unsure as to why. She doesn't have another wart on her paw (we have checked) and to the best of our knowledge, she hasn't injured herself. Our best guess is that she might still be encountering salt on the sidewalks, or it could be an arthritic style pain due to the weather changes. As I said, we just aren't sure yet.
Still, she is only mildly bothered by this - she still goes out for walks and the paw tends to 'warm up' after about 4 or 5 minutes. It's either that or she just forgets about the pain once the first car drives by, I'm not sure which. At any rate, once she gets going she seems to be fine, at least for the duration of the walk. We notice it most once she wakes up, she is often limping very badly for the first few steps at least.
I will say this though: Louise seems to be happy for the weather to return to normal. She was getting tired of the snow. It was fun for her for the first little while, but once all the salt was thrown down, she started losing interest. Even now, I notice her making a decision as we are leaving - it's like she is deciding if it is worth it or not. The rain had stopped yesterday and the temperatures were mild. Louise approved. We had two long walks that she seemed to enjoy.