Don't "NC" her, don't "backburner" her, just stop talking to her and move on. NC is when you're still trying to play games with her and use "tactics", total bunk... Just move the **** on with your life and ask out another girl.
You made your case like a lawyer. Stable job. Good guy. Ready for something real. All true. All irrelevant.
She weighed your points, nodded along, felt nothing — then fell hard for some tattooed bartender with a motorcycle and a gambling problem.
Logic is where attraction goes to die. The "22 Rules" work a level deeper, on the subconscious switches that decide within minutes whether you register as a MAN or as part of the furniture.
Stop presenting evidence. Start flipping switches.