Hey guys, I'm trying to find a book for my girlfriend to get her as a present she's been looking for it for ages from what she's said:

It's about a girl who lives with her Dad, mum is dead, (later finds out dad is a scientist) she gets abducted and placed in this tank... turns out she's one of a bunch of clones that are being tested on they then escape but need water to survive??

she swore she thought it was called "water" but can't remember

would make a great present if anyone can help <3