You could try contacting Texas A&M's College of Ag and Life Sciences and see if they do any summer programs. I have no idea if they do any, but if they did I would imagine it would be pretty fun, they have tons of land and a lot of animals, as well as fish hatcheries on campus.
I'd also contact your local 4H... while not exactly directly related to veterinary work, I would imagine they have lots of summer programs working with animals and learning about them that she might enjoy. And 4H is for kids of all ages, if I'm not mistaken.
