Didn't she pay attention to anything at all? Of course it was icy out, it was still winter. Without thinking, since Tohru's safety exceeded all logical thought (not that Kyo had a lot of that), the teen reached out to grab onto her to prevent her from falling flat. However, the change in momentum caused her to fall into him. Her collision then caused him to slip and fall over. But hey! At least she was going to fall on him and not the floor.

"ACK!"