Wow, quite an exciting episode. Thanks for the update. Meera could have been Sara's classmate in primary school or high school, not necessarily in medical college.
Things are evolving very fast since they have to wrap up the serial by 7 August (3 weeks more). I was actually beginning to wonder whether Sara, being a doctor, had done plastic surgery on some terrorist to make her look like Suja (anything is possible in Tamil serials, right?)But it looks like Meera may be a lost twin of Suja's.