@OurLadyOfWires Can you give us any sense of how Velvet explained her miraculous recovery to Cadance?
About this.
I am almost making this a temporary threadmark, but I will respect everyone's intelligence and assume that isn't needed.
So, because Princess Cadance isn't the main character, and because I just don't have the time to write certain interludes that I would like to write, some things were left unsaid. Or rather, they were not explicitly said, but were readable from subtext.
Still, I wanted to talk a little bit about Cadance's perspective.
So. We are currently in the middle-to-end of turn 21.
Cadance married on Turn 18. Somewhere around that time (I can't find the exact threadmark right now) you also
made the great and terrible oath promise that you would not leave her, and you two got a lot closer.
The second half of turn 18 was her honeymoon.
Coincidentally, between turns 18 and 19, you performed the Rite of the Mother and the Father.
And on turn 19,
on this particular threadmark, you revealed to her that Luna is quite literally your adopted filly daughter.
And this is a quote from the linked threadmark:
Princess Mi Amore Cadenza has joined Velvet Cover's faction. She is not considered a "Confidante" for mechanical effects, and will not immediately translate into actions points/favor requests. But your relationship is just as strong, if not more. And her role to play is much greater.
Issues of Lore revelations, and other things besides, will be tackled at a later stage. For now, you have only revealed to her that Selene was Luna all along. Your bond is strong enough for you to trust her with that, and for her to side with you moving forward.
"Problems" that were attached to Princess Cadance, such as her knowing about your scar, are no longer in effect. And Velvet Covers will safely assume that, if worst comes to pass, Cadance will side with her instead of Princess Celestia.
Importantly, on Turn 19 you revealed Luna to her, but you told her that "I will explain you everything later" and she told you that "I trust you on this so I will wait".
Now, and here's the kicker, at the END of turn 19 you get (almost) killed.
So, during the entirety of Turn 20, you are mechanically useless, and narratively a corpse on your bed.
And again, this is still the middle of turn 21. You just left your bed, and started working again, maybe 15 days ago.
Which brings me back to my point. Try to see this from Caddy's perspective.
She makes a friend, practically elects a backup "Love's chosen", has her wedding, discovers that her backup LC somehow has Luna as an adoptive daughter, but before you two can sit down and chat about this you ALMOST DIED.
This last update was, unironically, the first time you actually spoke to her (while being awake and aware, that is, and not dying in bed) ever since you almost kicked the bucket.
When you stop and take stock of your situation, you actually have a pretty good thing going on with Cadance. She is officially part of your faction, she knows that Luna exists, and you both in-and-out-of-character want to both teach her the Lores and show her the Forge ritual.
The only thing that has stopped you from acting upon those desires was (1) the fact that Celestia can sense the Lores, to an unknown degree, and (2) the fact you didn't have any time to do it because you almost died.
So yeah. From Cadance's perspective she is missing a lot of pieces, she trusts you enough to go with whatever you tell her, and this is your first opportunity to act upon those things. As long as you remember the risks involved.
Anyhow.
@spiderhellian to answer your question that started this whole post from me: you don't need to explain her anything because she already threw her lot in with you. You can trust Velvet to do something that will be agreeable to both you and Cadance. It's the other factors surrounding you that you should be worried about, if at all.
Hope yall doing well. Gotta skaddle.