Hello Carolyn,
I came across your site by accident as I was trying to determine what to wear on my upcoming trip to Bulgaria to visit my son. (Same boat as your dad!).
My son, Jesse, has lived in Bulgaria for 5 years, He  has a consulting business, does accrediting for upstart and existing schools for International Accreditation, and is Director of Education at American English Academy (AEA) near Sofia. He recently returned from Kenya (Meru Co) where he is supervising the upstart of a school for orphans and children with AIDS. 
He's quite an interesting guy, coming from the foothills of N. Pa, and being raised as the Walton family. He would probably love to meet another American in Bulgaria. Should you want to network or simply touch base, his email is hainesjesset@gmail.com. He is also on Linkedin under Jesse T. Haines . He lives at Prof. Georgi Zlatarski complex near Sofia.
At any rate, I thoroughly enjoy your Blog, and will continue to follow your adventures.  Life is good, stay well.