It might help her to get experience in areas she has not tried out before. If most of her experience is in small animal clinics, she might try volunteering at a farm/horse track/horse riding facility. If she has a university or biomedical research facility nearby, getting a part-time job in research can make her a unique applicant. Does she have time to take some classes? She won't be able to do much about her cumulative GPA, but doing well in a few classes after undergrad shows that you can do well, and some schools look at your last 30-45 credit hours in addition to your overall GPA, so taking more classes can help that particular GPA. Are her GRE scores competitive by vet school standards? Lots of vet schools say the easiest thing to help your application is to retake the GREs, and a really incredible GRE score (over 700s on verbal and math) will probably help balance out a mediocre GPA.
Does she have an in-state vet school? Everyone's best chance is their in state, but also keep in mind that many schools are starting to take more out of state applicants, so she might want to apply to several schools. There are also overseas schools, some that are AVMA accred. and some that are not. If overseas is an option, she should think about whether to apply to a school that is not-accred (she will have to take an extra test to work in the states and i think some schools also do their 4th year in the states) or an accred. one where she could come right back to the states to practice.