So personally, I still feel that
@kinigget and
@Onmur have plans that are the closest to what Hitommy needs to hear (and we need to say), so I'm going to take a stab at fusing them together and then massaging them for the clarifying update:
[X] Sober up. This is serious, yet good.
-[X] Step 1: Invite
--[X] Confirm her suspicions; be clear and forthright.
--[X] Offer to explain as best as you can.
--[X] Warn that some topics are sensitive and involve either personal information you would need permission to reveal, or information that could put people very directly in danger.
-[X] Step 2: Inform
--[X] Make clear that besides the obvious dangers (fighting witches), being a magical girl has several hidden dangers, and that we are trying to dissuade Contracts.
--[X] Segue from there to Hitomi not being a potential, and begin explaining the first hidden danger, that "Grief" is a literal term.
---[X] Use this as a chance to explain how Hitomi, Madoka, and other non-meguca supports (such as adults) can help.
---[X] Subtly apologize to Mami, and explain that you've been planning to tell adults about magic for many reasons, this foremost.
--[X] Connect the resource-management of Grief to Witches, and introduce the second hidden danger: Scarcity.
---[X] Explain how our power in particular changes that landscape drastically; quantify Clear Seeds.
--[X] From there, lead into our power (and those of the team), and how they are very well-set against the apparent danger and the (so far explained) hidden danger.
---[X] Explain that an outlier (Walpurgisnacht) on the "obvious danger" side is approaching.
---[X] Describe our efforts so far to mitigate, avert, and overcome this.
---[X] Explain how she (and other adults) could help.
-[X] Step 3: Inspire
--[X] Discuss what we want to accomplish once the immediate problems are resolved.
--[X] Request not just assistance, but insight and advice.
--[X] Make sure to stay away from the Lichbomb, Witchbomb, etc.
---[X] ...but try and set up an opportunity to talk with her in a context where we
can discuss them. It's important for the extreme failure modes to be known to more than one person.
---[X] Such a meeting would be a good time to discuss Tsuchiya Ritsuko, allowing us time to draw on multiple sources in a careful manner (dealing with Kyuubey when seeking information should
always be done carefully, but it's the best potential source here).
---[X] This would also be a good time to go into
detail on the hidden danger that is Kyuubey itself.
I added the Lichbomb to the "avoid" list because I strongly suspect that "mechanics of Grief" + "Lichbomb" would invite The Obvious Question, and there's no good way to defuse that.
EDIT: With the vote opened, I'm marking my checkboxes.
