Give them everything. Then take those things away. Introduce conflict into their lives. Make their life miserable. And then, when they're at their lowest, offer them the one thing they need most. Give them hope. Bring them to your side. Make them your slave and have them see you as their master.
This strategy is one of the general's many methods of breaking someone. I believe he is attempting to apply this specific method to Amera, but her situation is entirely different.
He hasn't done anything for her. Or has he? Hold on—come to think of it, he was the one who gave us hints on how to find her.
That means he already knows who she is. He knows where she lives. And he knows her family situation.