I think this is Ritu's masterplan.This is just a guess.I hope some of it will bcom true.
Ritu's main motive behind entering the academy was to steal the triggers.She joined the academy as a councellor.(Psychology mein degree kaam aayi uski)After entering the academy,she came 2 know that rajvir has already got the info of spy entering the academy and he has come to track down the spy so she behaved in a friendly manner with raj so that raj ko uspar shak na ho jaye.Phir ritu ne raj ka dhyan cadets par lagaya taki usse cadets par shak ho ki unmein se koi spy hai.Phir usne raj ki tarah naina ke strange behaviour ko notice kiya aur raj ke dimaag mein naina ke liye shak paida kar diya.Raj ka dhyan naina ki taraf chala gaya an ritu heaved a sigh if relief.
But she knew that jab tak raj kma mein hai,tab tak uska triggers churana bahut mushkil hai as raj will find out so she wrote those dhamki bhare khat to raj so that raj will leave the academy but raj didn't go so on 15th Aug she put a bomb inside the flag taki raj apni jaan bachane ke liye darkar bhaag jayega but khud hi apne jaal mein phas gayi. BC told her to unfold the flag and she got hurt in the blast but raj samajh gaya ki uski jaan khatre mein pad sakti hai agar woh kma mein raha but as a brave soldier,woh dara nahi balki uske liye ab yeh challenge ho gaya which worried ritu.
Ritu understood that raj will not leave kma until his mission is fulfilled and ritu cannot steal triggers bcoz of raj so she thought ki agar raj ka dhyan mission par se hataya jaye aur kahi aur laga diya jaye then she might be successful.Raj ka dhyan apne aap naina par chala gaya b'coz during that time naina par bahut injustice ho raha tha.Jab naina ko kma se bahar nikal diya gaya to ritu ne socha ki kisi bhi tarah naina kma mein rehna chahiye taki uska plan successful ho so she made a plan.The terrorists who hijacked naina's bus were ritu's aadmi as she sent them to kidnap naina so that raj will save her and bring her back.Her plan was succesful this time.
When everybody got the news of raj's death in an accident ritu became happy as she can fulfil her mission but her happiness was short lived as raj was not dead and came back alive.
When Major Bhargav told everyone that naina is actually navin's sister and she has come to prove that her bro was innocent ritu was taken aback.She thought ki agar naina kma mein rahi to uska bhanda phoot jayega ki usi ne navin ko phasaya hai isliye she tried hard to get naina out of kma but couldn't suceed due to raj.
Then ritu decided that woh raj ko pyar ke jaal mein phasayegi taki woh naina se door rahe.She proposed to him but raj said he doesn't love her due to which she got disappointed as uska saara kiya karaya par pani phir gaya.
Then Major Bhargav started the rumours of raj-naina affair.Ritu took advantage of it and put those posters of raj-naina affair so that raj naina se door jayega and she will come close to raj and that's why she helped raj by telling the academy that she is engaged to raj.
Raj uski is so called ehsaan ko chukane ke liye uske saath engaged hona chahta tha but ritu ki sachai naina aur raj ke saamne aa gayi ki she was the gf of navin but she lied to both of them abt her affair so they won't find out her truth.
When she came to know that raj has complete trust on her(which was her galat faimi) she tried to steal the triggers and then when she failed she decided to get engaged to raj and marry him so that she will steal the triggers.
One thing I don't understand,how can she think that she can steal the triggers after getting married to her?Kya raj usse pakad nahi sakta?
This is what I thought abt ritu's plan.I would love to read ur comments on it.