Complex sentence: Meanwhile, Chitra started her plan eagerly, even buying the truck and was ready to surprise Nandu but things went wrong and due to some problems with his family, Nandu had to stay in Delhi.
Split into simpler sentences: Meanwhile, Chitra started her plan eagerly, and was ready to surprise Nandu by buying the truck. Then things went wrong and due to some problems with his family, Nandu had to stay in Delhi.