Won't she just "get over it"?
Habituation is the technical term for "getting over it" and unfortunately, when it comes to separation anxiety, many dogs don't do this very well. Instead, they sensitise; they become more sensitive.
Our goal with this program is to desensitise your dog to alone-time so that they can tolerate longer and longer absences without the anxiety they are currently experiencing. It is a gradual experience, as opposed to a similar (but also VERY different) technique called flooding.