@Background Pony #4530
She knew Twilight was blowing up crystals, and led Twilight into blowing up the wall she was behind with her apparitions, unless you think Chrysalis planned for her to have friendly company in her imprisonment.
Say what you will, but it's more legitimate an implication than anything along the lines of "Chrysalis wanted Cadance alive" like I've seen, because there's never a hint in any of her actions or words that she had any desire to control her into renewing love for her ends, as interesting a premise as it might be. Cadance had to plead not to be hurt.
(on another note perhaps the "crystal apparition" part was a carryover from the original plans for Chrysalis to have been the one who took over the Crystal Empire, not Sombra) @Brass Beau
Tempest, Sunset, Discord. With two of those, not sure it's enough to be a pattern, with such a small sample size, but they were basically "less evil lackeys to the main baddie," and I suppose in terms of backstory Scorpan may count in that he used to work with Tirek, but turned a new leaf by turning against him after diplomacy failed.