Ugh. No.

Since Ellone's parents died when she was so young, Raine was pretty much her mother and Laguna was her father. They both cared for her as such, and in return, Ellone treated them as if they were her parents. She called them "Raine" and "Uncle Laguna" out of respect for her real parents who were killed trying to protect her.

That said, people would move heaven and earth for their children - and Laguna does so easily for Ellone. If somebody kidnapped your 5 year old daughter, wouldn't you try to save her?

As for Ellone, she's every much a "daddy's girl" in regards to Laguna, but that doesn't imply anything sexual. Since Squall doesn't remember her, Laguna is the only thing Ellone has left in the world, so of course she's a little clingy, even as an adult.

As for Raine's death, as stated before, Laguna got caught up with running Esthar, and had NO CLUE Raine was pregnant OR dying until after it happened. He still regrets that, and so does Ellone.