Even though it is trickier, time stopping is also an option.
Also, something that would vary from your usual situations would be your OCs being caught without them seeing what's happening to them. (less on the tragic side, which could open new perspectives)
And yeah, having the evil twin get caught for once. You could imagine a classic "good vs. evil" battle happening between the two sisters, and then a third part comes in and throws a spell on both. Which makes me think that your OCs should be seen with more characters alongside them (not necessarily fanart, new OCs could do the trick).
Hmmm someone else wanting Linkette as a victim. I could see a scene where perhaps a third somewhat mysterious character comes into play or perhaps the only way Link can stop Linkette is by petrifying/freeze both.
I like that.
Also I was giving "OCs being caught without them seeing what's happening to them" some thought. It's an idea but how would that look like. Aren't there any examples I can see?