There is things and rides for young kids at USO, the dinosaur area, the suess area, simpsons, for example. You both could go with the boys, but just have you two do your own schedule.
If you have a car, SW is about 20 minutes from USO. They have a small kid area with rides, and the animals and fish are fun for most toddlers.
Otherwise, there is miniature golf courses at citywalk, and all up and down I Drive. Maybe a pool day, and out to lunch at a place she can play at and some mini golf?