Who is Lt Sangeeta, army wife who overcame depression to ace SSB?

Lt. Sangeeta got married to Rifleman Shishir Malla (Sena Medal) in 2013. Shishir laid down his life in 2015 as a part of 'Operation Rakshak'. Upon hearing the news she went into a state of shock and depression. With continued support from her mother-in-law, she quit her teaching job and joined the Indian Army post clearing the SSB.