re: Four days in San Diego

Than save SeaWorld for the last day, because once you are out there, she might change her mindset.
With only 4 days SeaWorld would be last on my list.
The only good thing about SeaWorld San Diego is that it is not nearly as crowded as parks in Orlando.

The Balboa park area is close to the zoo, you might want to plan that together with the zoo on that day.

LaJolla is the only one kind of off the beaten path.

You could hit up Old Town San Diego for some good Mexican restaurants.