Sheena was born and brought up in a Christian family in Kerala, South India. She grow as a good believing christian. At the age of 18 she married to Saji Thomas and continue with him in the mission.

14 years worked in northern part of India and 5 years worked with Youth With A Mission in Chennai. Pioneered a new ministry with YWAM in Kochi and worked 7 years before leaving to Uganda. And she came to Kampala, Uganda in 2013 and pioneered a new work with her husband.

In 1998 she did DTS with YWAM and 1999 she did SOEP.

She married Saji in 1990 and had two children Kesia (25) and Keran (15)