That is how I trained her earlier and probably what I need to keep doing. I put her in the crate, leave the house, return in a few minutes and walk around the house without paying attention to her, go back outside, wait a longer time, come back in, and repeat. After months of this and gradually increasing the time I was out of the house, I got her to be quiet for up to 2 hours at one point, but she has regressed since I got the job.
Yeah, I really don't know. Most trainers say to ignore them. I thought that me leaving more often would make her get used to it.