Hari died koly said in her head. In life she cant always focus on what just happened she needs to move on. Sometimes you just need to move on and look at the future or the bright side of things. This can show that she can move on from situations like this.
Sassur killed himself because his life was falling apart. Sass and Koly were upset but they moved on and treated each other better. First his son Hari died at a very young age then his daughter left to get married.
This shows a lesson to move on instead of harming yourself you should move on. Chandra gets married and leaves. Sassur was so said. He killed himself because of what happened.