yeah - different strokes for different (kids) folks. my kids tended to be ok with longer afternoon A time (especially spirited Olivia). and because that late afternoon and evening coudl be kept filled with dinner, DVD, bath, stories and bedtime routines it seemed to pass easier than if it was in the middle of the day.
it comes down to how she will react to the extra length. if you keep her up extra long in the morning as a trial (say pushing out the nap to 12 or 12:30) and it results in a 1 1/2 - 2 hrs nap then you may find you easily make it to 6:30-7 for bedtime. if you try it and she takes a short nap regardless then you woudl still havew to consider a longer PM A time or early bed. it is all trial and error to see what she responds to as every kid really is different thanks to so many variables that all add up to them being "them". HTH