Basically, does my daughter STTN by your standards? What *is* the standard?

We started saying E STTN at 25 months old because she actually started doing it sometimes (like 7-7), but its still not consistent at 31 months. I feel like there's always a reason - teeth hurting, ill, unsettled about something - but the most she ever goes STTN is three nights in a row (but she will wake in the night many, many nights in a row, usually once but sometimes every hour or so).

Is this the same for you? Are my expectations way off? I'm reading on another thread about EBF babies who didn't STTN until, gasp, over a year old. Does STTN mean most nights at that point?