Your boyfriend is right, don't shut her in a crate. She would be even more traumatized and could easily do damage to her teeth by trying to chew her way out.
Make sure she has lots of running, walking to tire her before you leave. Take her on a long walk.
You could use one of these
Comfort Zone® Plug-In for Dogs | DrsFosterSmith.com to help her.
Buy a beef femur bone, (about 1 inch) boil and remove marrow and leave that with her. She can't splinter or eat it, but it's a good chewing aid.
If you have a CD player, then buy some solo harp CD's. It's been proving it even calms the salvage beast.
Put one of your T-shirts (after you have worn it and not washed yet) in her bed.
Then if possible, have someone come halfway into her stay, to take her on a long walk or lots of play outside for at least 1/2 hour.
yavenay has a valid point about training her a little time alone by leaving for only a couple minutes and slowly increasing the time. On the times she doesn't cry, reward her with a tiny snack. It takes time to get them adjusted to new life styles, but it can be done. Good luck with your baby.