Complex sentence: In 2009, she appeared on a telefilm based on the 26/11 terror attacks in Mumbai called "Un Hazaaron Ke Naam", where she played the role of Jyoti--a rich brat and how the attacks transformed her be more socially responsible towards her society.
Split into simpler sentences: In 2009, she appeared on a telefilm based on the 26/11 terror attacks in Mumbai called "Un Hazaaron Ke Naam", in which she played the role of Jyoti, a rich brat. The story dealt with how the attacks transformed her to be more socially responsible towards her society.