obviously kali will be shattered to know that yug has married garui and now hates her. but kali is made of sterner stuff, yes she may fill completely dejected knowing that she has lost everything that she loved the most. and vishwa trying to kill the baby will only give kali a reason to life and fight for her life as well as the babys
but I doubt that Nandu is capable of reason, given that he didn't understand that she is another man's wife and is shattered at loosing her baby, and all she wanted to do was go back to her family and let them know what horrors she has suffered, he didn't want to let her go and his mother did not even bother to explain to him but she actually had to lock him in so kali could leave.
the most Nandu can do is save kali's life from goons by brut force if she is ever in trouble. all he is capable of is being kali's mussel man, hoping he understands her plight. and her need to take revenge for what was done to her