Oh. Oh that's fascinating. Oh that's—
There's a strong sense of this creature is mine, when she looks at Scintilla's lifeforce, and a hint of a marbled red-black shadow overlaying it—not changing anything, just... enfolding, enclosing, marking.
But—it almost looks like—
She tests it on her creatures first, back in the cavern. They don't regenerate rapidly by default but she can heal them, if she pushes on that connection just right. It wasn't obvious until she saw it from this perspective; the connection is similar, but Scyelen isn't a part of herself the same way, and healing your belongings is apparently a more natural and obvious action than healing your body parts.
Ever so carefully, she finds a lingering hint of damage in Scyelen's lungs from her brief adventure with decompression, and...
It's almost frighteningly simple. The new cells link into her soul just the same as naturally produced ones.
Okay, one more question to answer before she proceeds: just to make sure she can, she lets go. The shadow on Scyelen's lifeforce fades, and there are no discernible aftereffects, at least not ones discernible to Scintilla.
The Scintilla outside the vehicle says, "I've been figuring out my powers and I think I might have a way to resurrect Samantha. Or at least I'm pretty sure I can fix her body and since her soul hasn't let go of it yet that'll probably bring her back. I figured I should ask before trying it, though."