On third thought, I have concerns about the possible interaction between MAD ("If Lilly dies, so does everyone else") and [My Resolution, Thy Bedrock]. Lilly doesn't exactly know what her resolutions are, but seems to be at least inclined to be a hero--and MAD, for someone not used to thinking in terms of pre-commitment and possible futures, doesn't seem very heroic.
We also don't know the full degree of this MAD. If it also risks her family, it may make Lilly BSOD in trying to protect them (worse, she might decide to keep away from them), which we can't afford. There would likely be serious stress issues even if she didn't outright keep away.
The best possible outcome would be that the MAD specifically targets our attackers and their backers, but we, sadly, don't
know this is the case.
There is also the issue of how effective the MAD must be to be detected by precogs: the smaller the blast radius, the less likely it'll be detected, which seems to indicate this is a "go big (and face the Bedrock/family/profile issues) or not be very useful" power (unless, maybe, it turns out to be the best possible outcome, which we don't know).
Even though our Evie seems to be more on our side, we don't know if she cares about anyone else; she may very well be working under the philosophy
willie's will we wappy; wut wif willie wies weh wowld woes wawong with wer.
which, to be sure, is no more than an in-universe confirmation of what was already true:
When Lilly dies, this world dies with her.
(and might be another ideal possible outcome if it just makes everyone know that)
but I'm afraid Lilly might not think of it that way... despite that she already kinda knows/believes it to be the case:
You suppose at least your lie about running away if things turn bleak is perhaps not so much a lie anymore, seeing as how the consequences are apparently so bad (yet also, still not actually explained).
she's not really acting like it, so I assume it's more like a thought being avoided for now. I don't have the impression that she would take it as calmly as, say, Optimizer!Lilly.
I don't want to risk the divergence + family issues in addition to the raising of our profile the MAD will probably involve, so I've switched my vote.