I'm very unsure on what the value of raising events from this world is. Why include this?
The events aren't necessary but raising one odd reality raises the possibility that we know of others (like post-Madokami stuff) if it should come up. I want to hint to her enough so that she can figure out that, yes, she can talk to us about that too. Because we knew all along and we're by her side anyways.
Minor vote edit, since it's been brought up before that time travel mechanics from Homura's Revenge might not constitute benign small talk. I'll let Sabrina herself decide what qualifies.
If we want, we could raise the Fukushima tidal wave as a nuclear disaster that never happened here but did in our other memories.
The rest is because I really don't want to blindly jump in without knowing what lies ahead.
Annnd, seeing as Kaizuki made an alternative and
I really want to know too...
[X] Talk to Homura about the strange nature of information you have, spanning centuries and continents, and including timelines that, to your knowledge,
couldn't have happened
and even weirder things like alternate histories without magic.
-[X]
Raise a benign example.
-[X] Mutually discuss what this means for the reliability of your knowledge,
with a focus on your ability to help people.
[X] Tell her we believe we were
created through Madoka's Wish,
to help Homura.
-[X]
We wouldn't be here without either of them. Thank you.
--[X] (Jokingly.) ...Would this make them ...our mothers?
[X] Ask, if she is willing, if she could briefly hit any high points from the earlier loops. There've been a few more discrepancies in places than you'd expected and, well...