Yes, more succinct for sure man. Way too logical, way too much information over the app. Also don't need to respond to every question she asks, and probably don't joke about the serial killing more than once.

Just my take.

I was thinking your first serial killer comment needed an emoji, 😂😆 or whatever, but then you bring it up again which is bad bad bad. And no emoji. Your first longer paragraph response to her multiple messages were fine, you should have stopped right there til she reengages, unless more than 2-3 days elapsed with no response