The Cyclone or Tropical Heat hybrid are definitely better choices as she would have a wider range of conditions to work with. I would also suggest the Rising Star from Roto Grip as it will work on medium to light conditions. That ball is similar to the Tropical Heat hybrid but seems to be more continual on the lane instead of being a little more angular.
My arsenal
Heavy Oil: Storm Virtual Gravity Nano: 2000 AB
Medium-Heavy Oil: Storm Anarchy: 1500 polished
Medium Oil: Roto Grip Nomad Dagger: 1500 polished
Medium-Light Oil: Roto Grip Rising Star: 1500 polished