My dogs phobias question about getting her to urinate?

Is this something new that just happenned from yesterday If you took her for a longer walk than usual I'm sure she is really tired now and I would let her sleep.Maybe by breaking her pattern and habits might help her over come her fear..If hs is'nt drinking water she most likely won't have to go yet.Once she starts to wake up then try taking her out but if she has'nt made a mistake in the house than I would let her be.Has she made mistakes before because of her fear?? I still say she may be working off of you a bit and I think if you let her be a little bit more each day she just might come out of her fear on her own.Try to change things up a bit each day to cause a little confusion as most dogs have their schedules down pat..Just relax and she may also..good luck