I had the same problem with Shelby for a while. I had to take her out in it and walk her around (meaning I got wet too, but oh well). If she still did nto go, she had to go in her crate, to avoid her going on the floor. I would then wait a little while and take her out again. Once she finally went, I made a big deal over it and went inside and went back to normal (usually this was at night, so we then went to bed). This made for some late nights, but it has worked. Now, all I have to do is say "Shelby, get down those steps" and she goes down, and quickly does buisness her and then comes inside.