She knows how much Alekh is attached to Sadhana and her things and if he is calmly told or convinced he would have reacted better
The better thing would have been Sakshi after she comes she could have adjusted herself in such a way that she believe Sadhana is always in Alkehs mind and her things are quite sentimental for him and slowly shown how she could make him beleve that she is going to give him love and happiness to overcome the grief of loosing Sadhana
Vasu looses out easily being a mother she can do better