Hi yorkster, you're absolutely right that this is seperation anxiety and it was triggered when she got used to being around you all the time. Refer to the post Dixieland Dancer showed you and that will offer some great tips.
I think an important thing for you to do is be aloof with her while you are training her out of it. I know its hard! I had to be aloof with my Reece baby from the minute I brought him home and it nearly killed me! It will be worth it though if you won't have to worry about seperation anxiety anymore. Try not to let her follow you from room to room when you are home. Maybe give her a stuffed kong or something really great in the kitchen or another room. If she tries to take it to the room where you are, take it away. Only allow her to have it if she's in the kitchen alone. You may want to use baby gates to help you with this. Also try the ignoring her 10 minutes before you leave and after you get home.
I know this is one of the hardest things to deal with (been through it twice this year!), but if you stick with the training, you should have great results. Be sure to look at that other post too, as it goes into more detail. Good luck!
Shiloh, Reece, Lolly, Skylar
and fosters Snickers, Missy, Magic, Merlin, Maya