I would prob ignore her alittle before you leave and don't greet her right away when you come back. I also would have a crate there for her with her pillow and toys in it. She could go in it for comfort. I also don't let my yorkie sleep in my bed. He goes to sleep in his crate. Actually walks right in when I said it's bedtime.
This link is from Cesar's way and I do follow a lot of his thoughts on it. He does know what he is talking about. Good luck.
https://www.cesarsway.com/dog-behavi...ration-anxiety