>>2217753>>to possibly be rescued again.That is a complete interpolation/assumption/conjecture.
She might be there of her own chosing; She will definitely influence the outcome of the next impact, in any case, we don't have enough information to draw that conclusion; There certainly is NO in-universe talk of 'saving' her from within the core of any kind.
She also still did the rocket charge thing - She didn't kill Zeruel (whose powers were also beefed up, and you'd have to read much into it to say it was for any reason other than justifying the Impact) in either version, and this time, even saves Mari's ass.