<p>Many engineering schools are working hard to attract more female students. This can result in attractive merit scholarships 
For those, focus on the STEM-centric schools where the male/female ratio is a problem. Some examples are RPI, Case Western, RIT, WPI. If her ACT is a liability, note that WPI is the only test-optional engineering school.</p>
<p>What other factors matter to her (and you)? does she want to be close to home? does she like cities? Would she mind being a minority on campus at a STEM-school?
Actually, I think Iowa is one of the underrepresented states when it comes to applying to east and west coast schools. That may boost her odds a little at the more selective schools (though the ACT could still hurt her).
Would she like a smaller school with more of a liberal arts college feel to it? If so, a school like Bucknell, Lafayette or Union College might be good. Or a small university like U. Rochester, or Tufts.</p>