Her day is long but I think her routine is good and personally I don't think it's a routine issue, though someone else might see something otherwise. The only thing I might suggest is moving her nap earlier and waking her earlier, say 12:30-2:30, if you can so she has more A time before bed. Perhaps she is a tad UT at bedtime which is why she is waking earlier.
Is she teething at the moment?
I think that given she has slept so well for so long, this is probably just a temporary blip that will pass once you figure out what is going on, or even on it's own.