University of New Mexico has an automatic scholarship (Amigo) for her stats to bring OOS costs down to in-state prices.
The Amigo Scholarship also gives a $200/year ($100.semester) stipend
Instate UNM costs about $18K including tuition, fees. room & board. With a $5.5K student direct loan, UNM is within your price range.
Biology program is strong, with an emphasis on evolutionary biology. UNM also offers an undergrad degree in population (public) health.