Miriel nods when he asks the question, then nods again after he's done speaking. "I believe that is a wise course of action, Dr. Baelheit. Should one half of the formula fall into the Cybetronians' hands, they will not possess the completed formula." It stands to reason, though, that, should the Cybertronians get one part of the formula, they will focus their efforts on finding the other. That might increase the danger for whoever has that part of the formula. It's not a flaw in the plan itself, but merely an unfortunate aspect of the situation. They can handle it.

"Did Megatron reveal any information regarding the numbers he commands? I doubt he would be so foolish as to say anything outright, but even hints may be utilizable." It does very much make a difference if five Cybertronians come knocking on her door, as opposed to one or two. Of course, Megatron might consider them, being human pests, to be easy to deal with, and therefore not requiring large numbers.