I can remember this one scene from a book and it is driving me crazy. The H is Irish American and his family owns an inn/bar with a boat dock. He takes the h to meet his parents, and she has a kid who also goes along. I think she is a musician and plays for the family while they are visiting. I remembered the scene while rereading Midnight Angel, so possibly this h plays the harp like Allegra. I remember the kid being excited over seeing the boats after lunch. That's all I've got at the moment. If anything else come to me, I will add it.
It turns out I was mixing two books in my head. The H's in the books are twins, so the family appears in both but one h has the kid and the other h is the musician. These are the books by Maryann Jordan: Gabe: The Alvarez Security Series and Vinny: Alvarez Security Series.