I've always been able to relate to Ridley, since I was a dramatic and an emotional wreck during my teen years. While I didn't go wild, I did have several fights with my parents growing up. I immediately empathized with Ridley. I have always felt that she was acting bad because she thinks it's "expected" of her. However, based on her flashbacks, it seems that her bad girl attitude particularly comes out when she's protecting Lena.
But in Dangerous Creatures, the Link-Ridley tandem seems to be on shaky ground. However, they are both starting to mature as individuals, and I like that for them. Link is slowly starting to seriously think about his future and the future of his relationship with Ridley, while Ridley is starting to show signs of caring for someone other than herself (or Lena) this time.
New character Lennox Gates is as bad and as dangerous as they come. It's not very clear what he is exactly, only that he's really powerful - as powerful as Lena, it seems. And sorry, but he makes Link look like a high school loser, and he seems a much better fit for Ridley. Authors Garcia and Stohl certainly threw me off the Link-Ridley ship for a while.
However, for some reason, I just don't love the story. Something still seems to be lacking for me. I enjoy it, but I don't love it yet. Also, that ending, what. the. hell. I'm not going to spoil it for you, but I know you'll be saying the same thing if you read it. If Garcia and Stohl wanted to throw a cliffhanger that's sure to make me itch for the next one, well, I gotta hand it to them!