K.W.
Well, sounds like you have a good schedule...
I'm all about good schedules and great sleep. (hence, I have 4 kids.. all great sleepers)....
My advise... she's probably waking b/c she's over-tired.. (not hungry).... you know she can sleep through the night, she has done this already for you....
I suggest backing up her bedtime... sounds like you have friends that have probably already told you this.... when mine were that little, they went to bed at 630pm... and slept til 630-700am... sleep breads sleep... I know it doesn't make sense in our minds to back up the bedtime, but, it works!
give this a try and maybe that will help.
also, be sure sure she's getting 2 good naps during day... the better she naps in the day, the better she will sleep at night... again, the sleep breads sleep theory....
I could go on and on about this subject, I've helped many a friends on this topic, but, don't want to be too "over-board" on info...
good luck!
K.