Security footage doesn't seem dangerous. In fact it sounds downright preferable to storming a prison to fight an ancient vampire.
"Yes, I'll be ready on standby. But..." Do I really need to be sitting on my hands until then? "Until that time, I could always lend my experience to Deputy Krieg or the Herald? Unless you'd prefer I remain, erm...undistracted."
With all the suggestions and factors laid out before them, the single line of authority provides some reassurances to the skittish Mekhet. The Sheriff delegating. The Prince giving her permissions. But whether the plan, still in its infancy, came together to accomplish their goal, remains to be seen.