[X] "Before we do anything else, we need to know what Mab intends to do with him once she finds him. Thankfully, I have just the tool for the job. Now, tell me - was there any one or anything else present during your deal with Winter Queen? Mouse? MIster?" Use the Crown on MIster to find what Mab is planning to do with the Ankou if and once they are located.
[X] "It's too soon to try to plan around having to deal with Mab on top of the rest of this mess. Why don't we just focus on stopping the necromancer plot for now, and play the rest by ear as the situation develops? I know that's probably not how you normally do things, but it's been working for me so far." And should we need to knock Harry out before he can summon Mab, we can make that decision if and when it becomes necessary.