Two things: First (and I so wish people would recognize this, I keep repeating it!) Dogs have a much different experience of space then we do. They are den animals. They actually like smaller, enclosed spaces. "Shutting her in" the crate is pure projection, we might not like that, but if you've used the crate and trained her to it properly, the size is a non issue for her.
What is more likely the issue is her loneliness. Dogs are pack animals and do not like to be separate, regardless of the size of the space. This is just natural, more so b/c they are Vizslas and incredibly attached to us.
So, use the crate as part of the day, even when you are there so she doesn't just associate it with being alone, and when she hollers, ignore it. She needs to learn to self soothe and tolerate the separation, and that can occur easiest in a smaller space while you are there, and gradually add time and separations.