When you put her in the crate to go to work, just matter of factly do it. No more fuss than is absolutely necessary. Pick her up and put her in the crate and leave. No long goodbys nor baby talk or any of that stuff. Just in the crate and you're gone. Also don't make it a big deal when you return home. Come in, change clothes, mess around a little before you give the pup any attention.