Hi there,
Well, I wouldn't classify my story as a "success story" quite yet, but with the separation anxiety, here is a very short summary of what we did.
May (adopted Regen): Realized Regen had SA on her 3rd day home. Consulted with behaviorist and started desensitization with keys, doors, coats, shoes AND either took Regen to work with me or had her at daycare for any absence. Last week of May, started counterconditioning as well as desensitization (as described in "I'll be home Soon" by Patricia McConnell). Worked up to 5 minutes alone with no distress.
June: Continued with counterconditioning & desensitization. Worked up to 10 minutes alone with no distress. Only left Regen at daycare or took to work.
July: Continued with counterconditioning & desensitization. Worked up to 20 minutes alone with no distress. Only left Regen at daycare or took to work.
August: Continued with counterconditioning & desensitization. Worked up to 30 minutes alone with no distress. Only left Regen at daycare or took to work for periods over 30 min. Took Regen to vet and put her on Clomipramine and Xanax since she had been unable to "get over the hump" with just the behavioral stuff.
September: Kept working on protocol, got Regen up to 1.5 hours (uncrated) with no vocalization or destruction. Toward the end of September, started to see results from the Clomipramine.
October: Regen had a papilloma & her home daycare buddy had KC. Had to leave her alone for 3 consecutive days during workday (about 6 hours). First 2 days went fine, 3rd day she managed to lock herself in bathroom and freaked the heck out. It took 3 weeks to get her back to the point she was at before this happened.
November: Regen is able to handle 2-3 hours at home alone, she doesn't love it, but she doesn't destroy anything. On days when she is home alone, she is more reactive toward other dogs and more high-strung in general for a couple days. Still paying for daycare.
December: Regen seems like she is at a standstill, we talk about getting another dog since she does much better with another dog and we had always planned to have two. Still paying for daycare. End of december- bring home Osa. Work on counterconditioning with both dogs over break in anticipation of return to work. Regen handles being crated and home alone WAY better- she actually finishes her Kong and doesn't hurt herself trying to escape the crate.
January: Regen and Osa are now at home, crated, for 8 hours 3 days a week and 6 hours 1 day a week. Regen has a 1-2 minute hissy fit after she finished her Kong and then sleeps the rest of the day now. Osa is another story

. Try them uncrated for small periods of time, Regen does great, Osa is another story!
So that's where we are now. She still has major issues with reactivity toward dogs/resource guarding, and I still wouldn't trust her around small children or our cats, but we can manage our life with her now that we can go to work and not spend a small fortune on daycare!