My, dd now 17 is the same way, motion in the car, but can ride the teacups, heat, lighting types, gag reflex, rarely got sick but when she did, projectile.
Severe motion sickness keeps her home bound so much unless she takes a scopamine (sp) transdermal patch for three days. Typical nausea n, Bonnie really no help.
We try to encorouge pears and one chewable that has pectin in it to help. Gosh last cruise was terrible when hurricaine Leslie rocked the boat. Nothing helped.