Characters of the story:

1. Srijana

2. Mukunda Shyam

3. Srijana's husband

4. Director General (DG)

5. Deputy Director General (DDG)

6. Rahlvai

7. Other engineers

Srijana can not be the culprit.  I see no reason for her to go through this hassle risking her oppurtunity for higher education.

Mukunda Sharma can not be the guilty or the story will not be interesting.

Srijana's husband - .. DEFINITELY, HE IS THE CULPRIT!!!

Rahulvai is too gentleman to do this kind of things.

Langugage of the email was -- " "मुर्ख, साले, गधा........................................................ मुकुन्द श्याम।

तैले यसो गरिस् उसो गरिस्, सबै भोग्छस्। तलाईं युनिभर्सिटिले इमेल गरेको छ, किन अहिले सम्म न पढिस्। छिटो पढेर जवाफ लेखेस्, नत्र राम्रो हुने छैन।""

Only very senior official or very close friend can use this kind of language for someone!