
Excellent! Happy to help. I'll move this thread - but I'm going to shelve this as adult, since I don't think this series is YA.

I don't have a copy on hand to verify, but I'm fairly certain that's how it ends.
I'm Coming to Get You is about a monster who eats/destroys planets, but the illustrations don't look like what you described.

Congrats on finding your book Sarah! I'll move this thread to Solved - but I'm going to put it in Adult fiction. Even though the protagonist is teenaged, this isn't really YA, just fantasy. (For one thing it wasn't published by Harper's Teen imprint)
Tourmaline, maybe? It seems to have a scene involving scorpions used as torture, from what I can tell from a Google book search.

Sometimes it takes awhile, Kimberly. Hang in there and bump your thread every few weeks. Sooner or later someone will know it! I've tried looking around a bit for you, but haven't turned anything up yet. Here's a few questions, though:
Would you say the subgenre was more romance or thriller/adventure?
Where did you get the book? If it was from a library there's a better chance of it turning up in a searchable database. Can you remember anything about the kidnappers or why these two were abducted? Any other details you can remember may help jog someone's memory or provide just the right keyword for searching!

Congratulations, Rainbowheart! I'll move this thread to Solved for you. :)

You're welcome! Glad I could help.

Thanks, Serendi! Since it was an obvious duplicate with no other posts, I deleted the other thread.

Yay! You're welcome, I'm happy I could help. :) I'll move this thread to Solved for you.

You're welcome! FYI, the story can be found in this collection:
A Roald Dahl Selection