[PW] help me remember a book

[Cary L. Montalvo]

I am looking for the title and/or the author of a paperback book I read
several years ago. The story is about a busy city family of four that
goes to a lake or beach house. It is the Dad's birthday I think and they
go out for a sail to celebrate. A storm rolls in and they "lose" their
teenage daughter. Presumed drowned, she has actually run away and is
living with an artist in the local area. She is a "wanna be" artist and
her family doesn't approve. They close up the house and don't return for
quite some time. When they do return it is because their son is going to
die and asks to go there. After they arrive they begin to find clues
that she is still around - a certain flower (her favorite) is left on
the porch, an unfinished bench she and her Dad were building is
finished. I don't remember what the cover looked like. I feel like the
title MAY HAVE had either the word Flower or the specific flower
(example: iris or lily) in it. I feel like the title MAY HAVE had the
girls name in it too. I could be completely wrong on the title though.
It would have been published before 2005 for sure. Please help me
remember! 

Cary in Brownsville, Texas