"Call upon Regulus and Severus," Tom responded. It would do to get her initial impression of them. After all, it was likely that they weren't from the same time as her; the precaution couldn't hurt. If he was still certain that they could be trusted then, he would meet with them and see what he thought of them. After all, practically everyone in this place knew that he was here. Surely, if they were as loyal as Bella claimed, it should come as no surprise that he was contacting them once more.
"And then see what you can find about the wars," Tom directed. "Find out who is most likely to pose some kind of threat." It wasn't as if he wasn't going to be begin doing some research of his own, but having the both of them working on collecting information would only strengthen their defenses - and prove to him what, exactly, her value was.