[2] In her first season in beach volleyball, and despite being the new member of the team, she managed (with Vicky Arvaniti) to finish 5th in the finals of the European Championship held in Klagenfurt, Austria hosted by CEV.

[3] Her greatest achievement to date has been the silver medal she gained with Vassiliki Arvaniti at the XVII Mediterranean Games held at Mersin, Turkey.

[6] In April 2014, Maria Tsiartsiani returned to action after a successful surgery on the right shoulder and only a few months after she had given birth to her first child, and she teamed up with her ex-teammate Arvaniti.

Born in Athens, Karagkouni started playing volleyball at the age of 6 for Iraklis Kifissias, and in 2008 she got promoted to the women's first team even though she was only 15.

At a very young age, Karagkouni started representing the Greek national team in indoor volleyball taking part in various international championships.