Talia considered Doom's request, but she elected not to comment on it. Luthor was useful-- or could have his uses at least, and some of those uses came from being in the position of power that he had previous occupied. She could not swear that she would not assist him in reclaiming that power-- nor that she wouldn't keep him from it, if it served her purposes.
"I do not fear her." Talia said plainly, looking out towards the sea before focusing on the sand beneath her bare feet again. "She will have to search diligently to find anything useful. What she will find is what I want her to find, what I want the world to find. I have no doubts she will look past such things, but as I mentioned, by the time she discovers anything useful, it will be far too late."
Talia's eyes slipped to Doom, but she did not bite at his offer to have Mercy Graves turned into a Doombot. It would serve Talia better to simply see her killed, if she could not be subdued. A task likely easier said than done, but by the time Talia had enlisted her army, she had no doubt that between her elite agents, they could put the woman down.
"I appreciate your advice." She said idly, "I will withhold judgement on what should be done with Ms. Graves until a later date. I have yet to see how she will behave on the board, and I prefer not to eliminate pieces until they have served their usefulness."