As I remember, the liquification was more so part of the curse than the trials. The immense pain and risk of death is true either way, though.
And I don’t see any conflict with Ciri here. That would be her continuing to fight to make her own life, no? The destiny she’s running from isn’t about her being a witcher. More so the opposite, as I understand it.
Regarding the potions, I haven’t read the books, but the wiki alludes to “Children of Destiny” not needing the trials, of which Ciri is part of. Even if that’s not it, I don’t think a grown woman choosing to undergo the trials is comparable to forcing it on a child. Pretty badass, tbh.
Unless they’re actively losing money in their deal, they’re not gonna care if the sale comes immediately or years later. If Epic exclusive + late “hold outs” = $$$, they’re just gonna do that until the equation changes.