It is only humqn to be concerned about one's grandson and dadisa is no exception...I would have felt wierd if she wouldn't...Jagya was very near and dear to her...She kept away because of her realisation of what Jagya did was wrong...But as a human she doesn't have control over her motherly instincts...Anandi or Sumitra would not have left him alone as well during such conditions...They would atleast see that he is well taken care of and once he is ok, let him go...
I would like Anandi to face her past along with her future as well and come to terms with everything...