Yes, the term is, indeed, crap.
Tori .. I'll make a prediction. DD doesn't sound too different to my ds at that stage. He didn't speak much at all until 18 months, then came out with full sentences.
To go to the zoo and memorize what she has seen in, at this stage, indicative of a good memory. In other words, that specific part of her brain is heightened, and probably always will be.
She will be extremely good at academia. She will pass any exam she's given to sit.
From 0 to 3 is when the hard-wiring of the brain occurs. These years are hugely important.
So, leave aside the 'academic' stuff for now, because she's proven to be good. Buy her some boys' toys now .. diggers, complicated machinery, hands-on stuff, lego, duplo, Play-doh factories, etc.
And stand back. Let her work out three-dimensional stuff by herself, because it's as much a compliment to intelligence as salt is to pepper.