Can you give us a little more information...what are the times of her two naps and the duration? Also what is the parents theory behind this?
My daughter did two naps till she was two. Not because I said so, but because she wanted it and clearly needed it and if I didn't put her down she would fall asleep where she stood or sat anyway. I know most kids don't need two naps beyond the 12-18 mth age range, but there are exceptions.