Theory:

     Dr Kishore Murthy, a passenger on the flight said, “She was at the entrance of the aircraft when the terrorists boarded. She could have escaped like the pilots did, but she didn’t do it. That shows her guts and inner strength. She was truly a great leader.”
Explanation:
 
A passenger from Flight 73, who managed to escape from the dangerous situation of hijack, shared his opinion on Neerja based on his observation. He brought out the fact that Neerja stood at  the entrance of the aircraft when the terrorists boarded. She had the choice of escaping from the dangerous situation. She could have escaped like the pilots. Infact, Neerja was the one who alerted the pilots to escape from the plane. Still, she didn't had an intention to flee from the plane leaving others in that dangerous situation. That reflects her courage and inner strength. She was a fantastic, true leader.”
 
Meaning of difficult words:
 
S.No
Words
Meaning
1.
Inner strength
Great will power
2.
Board
To allow people to get onto a boat, aircraft etc.
3.
Intention
Something you want or plan to do
Reference:
State Council of Educational Research and Training (2019). Term-3 English Standard-7. A Story of Self Sacrifice and Bravery (pp. 105-111). Published by the Tamil Nadu Textbook and Educational Services Corporation.