A demon! Why hadn't she thought of that first? "Wow, cool!" Before she could reach out to offer her assistance, he was down the stairs before she could fully comprehend what she was seeing! She gave a little laugh, skipping down the steps herself. "That's pretty nifty," she said, grinning. "And you never have to apologize for having your tail out! If it's more comfortable, I'm alright with it!" She wouldn't want him to be in any sort of discomfort on her account!
She made a note of his preference of textures, already running through various ideas she could do for him. It made sense, really. If he had difficulty walking around, it would be nice to run into things that were soft and comfortable rather than pokey and sharp! She might even be able to design something to help him maneuver around the house, especially with his ability to sense water vapors.
"THAT'S SO COOL!" She covered her mouth with her hands, not meaning to erupt into such noise. "Sorry," she managed, wondering if she might have hurt his hearing. That was a thing! When you lost one sense, your others amplified to help out! Look at Matt Murdock! Ok, that was a special case, but she felt like this might be as well.
"Anyway, that water vapor thing! I might be able to rig something up with water vapor to help you see around the house a bit more!" She wondered if she might be able to do something for him outside as well, but he brought up a good point of the water in the air. The only way she would be able to cancel that out would be if she could create a sterile sphere around him...
She shook her head, tucking that way for later. She could try and figure it out once she was back at her shoppe. But for now, she was happy to be of any help that he might need to get around. "Well, you won't need luck today, because I don't mind helping! Do you want to hold my arm or anything like that?"