My JRT mix, Millie had mild separation anxiety when we first got her. Our trainer suggested that as we began getting ready, we should drop exeptionally good treats around the house. Not to call her attention to it, just drop one here and there. The idea was that instead of seeing us getting dressed, made up, etc, as a bad thing, that the treats would make it seem like a good thing.

I don't know if it would work in your case, but it worked like a charm for Millie. We used the yummiest treats we could find. Actually the first week, we used hot dogs.

If you try something like this and it doesn't work, you may need to seek the help of a behaviorist.