Originally posted by: Star_girl
I don't think she did it to make Adham king. Do you remember the part where Adham says, that he will be happiest if he knew that Maham killed Jalal's unborn child, because it will prove Maham's love for him. That is the whole point of her actions. She, on some level, wanted to prove her love for her own boy. And she felt that perhaps killing Jalal's child was the best way to do it.