Her point on the oddity of a public execution juxtaposed to the apparently unencumbered functioning of the remainder of the sect is a powerful one. The subtext, buy the way, is the anti-Judaic quality of the Marcan narrative wherein Jesus was killed to appease the Jews rather than caution them.
I think one point she didnt address is the possibility that Jesus followers so few in numbers, that the followers were not seen as a real threat, but the trouble maker had to go, just to ensure the money stayed flowing through the event.
With a small group and large crowds, "maybe" he was the only one visible while causing whatever disturbance he had caused. Sometimes people just crack.
The thing that bothers me, is in a sea of people at passovers, a small time village teacher/healer would be invisible in multitudes of other teachers and healer in attendance. These repeating trips she states would have given the authorities a backdrop of what he was about. I find it improbable due the crowds size during this period.
My personal view, is that he makes trouble and is dispatched, and set a example of what not to do by the authorities. If one tried messing up this payday for the temple due to the Roman infection, by starting trouble, one would find himself on a cross due to the high tensions, and the money at stake. We would also have exactly the same written material showing up we have in place.