50 Shades Stole My Sanity

“There are a few items I need. To start with, I’d like some cable ties,” he murmurs, his gray eyes cool but amused. […]
“Is there anything else?”
“I’d like some masking tape.”
Masking tape?
“Are you redecorating?” The words are out before I can stop them. Surely he hires laborers or has staff to help him decorate?
“No, not redecorating,” he says quickly then smirks, and I have the uncanny feeling that he’s laughing at me. […]
“Anything else?” My voice is husky and breathy. His eyes widen slightly.
“Some rope, I think.”

This is the scene in which Christian shows up at Ana’s work unexpectedly, in order to buy some things. The whole exchange bothers me a little. Here’s why:

1. Most people reading this are aware that Christian is using these items for his sexcapades. Ana, however, is not aware of this. She is also unbelievably sexually naive, so the thought wouldn’t cross her mind at this point.

2. Christian openly admits he is not redecorating as he buys rope, cable ties, and masking tape. Oh, and some coveralls on Ana’s recommendation, because he wouldn’t want to get his clothes dirty.

3. Ana describes Christian as a control freak, says he makes her uncomfortable, calls him intimidating, says he is scary, and at one point wonders if his words are a veiled threat.

Bearing these three points in mind… how on EARTH is one of her multiple internal voices not screaming ‘SERIAL KILLER!’ at her?! I was thinking it, and I already knew what the stuff was for. This is a guy she has met only twice. She barely knows him, is scared of him, and sees him buying rope, cable ties, tape and coveralls which are not for DIY purposes. I have to wonder why she did not immediately do this: