How did Roxana Manea die?

Roxana Manea was found dead on July 7. Roxana was shot by her own deskmate (Andrei Cretu) And her friend (Andreea Mitescu). The two of them ran away together after the tragedy. People say that her parents (Elena Manea and Florin Manea) kept posting photos and videos of her so her friends wouldn’t notice her death.