I'd just like to understand something better

This might not be the right place to post so move me if I made a mistake. This might sound trivial and the circumstances aren't not earth shattering but I feel that I'd like to know more about behavior like what I will describe. Dated a woman for 3 months and she ended it. Of course no one likes that to happen with them but I will survive. Here's my issue: the night she lowered the boom we had a date, I went over, she made an appetizer (a new recipe) she showed me pics of a recent trip she made, we went out to a casual dinner, had a lot of laughs, she discussed a health problem she is having, we came home, sat on her sofa and chatted THEN she told me in a rather emotionless tone that it was over. OK. What bugs me a LOT is how can someone put on a face of NO PROBLEM I'M HAPPY for 2 and a half hours knowing all along what is going to come? This was not a spur of the moment decision on her part, she said she decided it a week ago. Is she a narcissist? Does she have a conscience? I feel like a mouse that was toyed with by a cat for 2.5 hours and the cat knew all along that it was going the mouse and the mouse didn't' know. Like I said this is not near the problem that a lot of people post on here but I really would like to understand better. Thanks to everybody.

If she is NPD, its called a discard. You realy feel nothing ending the relationship, any way it happens. Emotionless.

Or she might be just a woman. Check blackpill on incel wiki for a set of scientific facts about dating and relationships. She wants Chad.