You can't forget the beaches. I'd recommend La Jolla shores or even Coronado. The whole Mission/Ocean/Pacific beach area, I feel, is more geared towards the college age crowd. Unfortunately, the forcasts states that it might be a little cloudy with possible rain on Wed. night/Thursday. Looks like there could be some 4 footers later in the day too if she surfs.
Another option is
Balboa Park, since she will be in that area checking out the zoo. There are some nice museums and shows in that area. Then if she's got a sweet tooth, you guys can stop by
extraodinary desserts. It's a few blocks from Balboa Park and my girl friend loves it.
It really depends on the age group. There's the Indian Casinos close by, 3 of them in fact. Tiajuna and the duty free store. it's ok to check out in the day time and please use the yellow cabs only. I got pick pocketed once there so be wary. She could shop at the malls out here. They're outdoors, which were something to get used to at first. Depending on her age, San Diego night life would consist of TJ, Pacific Beach or Downtown, price and age group up in accending order.
There is also a
free bus tour every 1st and 3rd Saturday of the month in Downtown.
That's all I can think of for now. Hope she has a good time and stays safe. HOpe that helps.
-Brian