Tell her the truth

"Right, so I made a device that can connect to other people's implants. I was able to connect to your ECU and what I found was pretty shocking. Not only did I see the emotions you were truly feeling and the emotions you were being made to feel, but I think I'm able to alter these emotions as well."

She doesn't look shocked, but rather intrigued. "Can you do that right now?" she asks. "Show me."

You're taken aback by her open mindedness about this. You take your phone out of your pocket and start the application you had written. You check the input and output streams. She's feeling... 12% aroused? Both streams are showing a steady amount of arousal.

"What are you looking at?" she asks you. You try to put it away before she can get it but she snatches it from your hands.

"Hmm… it says here curiosity, triumph and… arousal? Is that what I'm feeling right now?" she says with a large smile on her face. You're blushing heavily but are also a little angry at her for stealing your phone from you.

"Yes, that's correct. And if you would give me my phone back I could show you how I can alter those emotions." you reply.

She nods and gives you your phone back. "Alright, but leave arousal. I like that one." she tells you.

You check again. Her arousal has risen to 68% of all emotions felt. Oh Lord, what were you getting yourself into.
You take pain and wire it to be changed to drowsiness. "Okay. I've wired pain to drowsiness. If you hit yourself you should start feeling drowsy." you tell her.

Almost without hesitation she slaps herself across the face. You quickly pull up the emotion streams and sure enough. The input stream is filled with 22% pain and consequently the output stream is 22% drowsiness.

"I need to lay down for a second." you hear Carliah say. You look up from your phone and see Carliah has fallen backwards on her bed. The pain emotion quickly drops back down to 0% however and she gets back up.

"That's so messed up. What else can you do with it? Try something naughty." she instructs you. Before you close the input stream you notice that her arousal is at 84%. That's really fucking high, you think to yourself.