Where the hell were the keys being kept? 

The most likely scenario was that they were in Amanda's room. That meant I would need to sneak in, find them, and take them, all undetected. Without the help of any special tools, that would be quite difficult.

I couldn't kill Amanda, of course. If I did, then fled the house, I would be essentially confessing to the crime. So how could I do all this while she remained alive?

The answer was simple. I needed some of Vivian's sleeping pills.

I made my way to my niece's bedroom door and knocked. Once she appeared, I would just ask her for some of the pills without sharing my intentions. After what I had done for her today, she should give them to me without any fuss.