Ziddi Dil Maane Na S01 E169 Why Does Monami Get Emotional

In this episode, Monami brings Sanju with her to a storeroom, Sanju asks Monami why she came here where no one comes. Monami seeks help from Sanju to drag and bring the box. Inside the box, there were many things kept, which were of Param. Karan kept everything of his brother Param, Says Monami. Why does Monami get emotional?