I too am rooting for Chaaya because she is selfless in her love for her children, she does not differentiate between her child and Sangya's children. She has lived by the rules set by Sangya (except the one to stay away from Suryadev - which she was forced into breaking by him) and her meditation and prayers are not for any selfish desires. Chaaya true to her name lives to give solace to othersSangya's reason for tapp was in many ways selfish and she went about it in a very surreptitious manner. She stealthily took the potion that created Chaaya from her father's house. She did not inform anyone about going into recluse for tapp. She created Chaaya and then asked her to promise not to reveal her true identity and to go about convincing all that she was Sangya. She did not think about the needs of her infants - she only thought about herself. Therefore her behavior after completing tapp does not surprise me.