Need more info --
What is your procedure when you leave her? Have you tried both crating and not crating her to see if she does better with one or the other?
Do you leave her with some kind of yummy treat?
Does she behave the same way when you leave her at home?
How much exercise does she get (physical and mental)?
For some SA dogs lots of exercise (both physical and mental), a special treat and some white noise when you leave is all that's needed. Others will need some pharmaceutical help and conditioning training to overcome their SA.