How many newly wed wives are capable of,on command, putting on a vest, loading up 100 rds, mowing down innocent civilians, calmly reloading as she ran out, then driving off as you shoot cops from the rear.
This chick had mucho training and was hard core jihadi.
And, they probably knew months in advance about the Christmas party, plenty of time to plan, knew that it would be a soft target, worked with them so he knew nobody would shoot back.