"Wait a minute. I'm idiot. I don't have to go through all this fuss." Light said, realizing something. "In the first place, I was suspicious towards Dlanor as being the real Bernkastel. So, if I just write down her name.." Light trailed off, looking around and then whispered. "..it wouldn't matter. However you look at it, Erika would not factor into Bernkastel at all. I never brought her name up, did I?" Light said, smiling. 

"So, it's really simple. Even if I kill her and she has a heart monitor, you have to remember she's posing as a civilian. This puts her at a disadvantage, essentially she's walled herself off with no support. If she dies, and Dlanor reveals she was the real Bernkastel, that puts more suspicion towards Dlanor, not me." Light explained. 

"Sure it'd be strange if some random civilian died from the standpoint of the case, but that's if the police would even officially confirm it. And with no basis and "Aito" meeting her and not "Light Yagami", there's absolutely nothing that connects me to Furudo Erika, a photographer." Light clicked his watch three times.

Then, shut it. "On second thought, I'll wait until later when those two are done investigating, just in case they come across her. Or tomorrow. Either way, I gotta strike as early as I can." Light explained.  "Now, to the hospital."

Light started walking.