Complex sentence: Siddhi cant understand the concept of an arranged marriage and neither can she tolerate being surrounded by people... if she will get married, it will be only her and her love.
Split into simpler sentences: Siddhi cant understand the concept of an arrange-marriage and neither can she tolerate being surrounded by people. She believes that one must marry his/her true love, and she thinks that if she will get married, it will be only her and her love.