This is historical nonsense. Yugoslavia (i.e. Kingdom of Serbs, Croats and Slovenes) was created in 1919., after WWI. Present day Kosovo and Metohija and Makedonija were part of Serbia since the dissolution of the Ottoman rule in the Balkans (Balkan Wars). For historically challenged, Balkan wars were BEFORE WWI.
"When Yugoslavia took over the territories the family was persecuted and my father poisoned." is complete fabrication.
But having in mind Albanian propensity for blattant historical lies (e.g. Ilyrian origin, Alexander the Great being an Albanian and other fantastic tales) this is merely a glitch in the script :-)
There is a rabid Anti-Serb who can be consulted on Mother Theresa. He can not be accued of favorism. His name is Christopher Hitchens.
OK, as usual the Serbs did no wrong. Mother Teresa and her brother lied. Whatever.