Super quick background: My mom has custody of my daughter currently.
My mom is allowing my daughter to choose between a low-back booster and a high-back booster. I don't want her in anything but the high-backed booster....which is why I bought it in the first place. Alivia will be 7 in November, but is only about 40" tall and is about 43 pounds. She didn't transition into a booster in general until after she turned 6. When I say anything to my mom about this, she says that Alivia's doctor said it was okay.
Please point me to valid information proving that high-backed boosters are safer! (We live in Wisconsin, if it matters.) Or is this not worth a battle? Am *I* wrong? Is she just as safe in the other booster?
ETA: The car seat I want her in is the Graco Nautilus.
Edited by Aliviasmom - 10/27/11 at 2:00pm