It was comforting to know she wasn't the only worried about this. The TARDIS was concerned, and both Doctors had all ready seemed to form some type of plan to find out.
"The Master used to come here to the complex to visit Romana, but I have not seen him here since she reappeared here. I have not spoken to him, aside from the time I caught him and Romana together, but that was only a few words." Leela sighed a bit. "I agree that they need to be watched, especially the Master. No matter what she may say, I do not trust him, even if he has made attempts to try and be better."
It was then that K-9 entered the conversation again. "Master, if I might. If you wish some way to survey the other mistress, I offer myself." With his ability to record things, it could come in handy should the Doctors decide to use him at all.